Analog Circuits Lecture 2: The Ideal Diode and Its applications

In this lecture, i discussed about the ideal diode and its I-V characteristics, applications. and also discussed about  how to determine which diode is on and off in a multi diode circuit.
For Video Lecture follow the below link:  
https://youtu.be/ByUcx6wpKGU
https://youtu.be/4q930UN_t64 
 
For Lecture Material download from follow the below link:
http://www.mediafire.com/file/5me1bubjr957wmt/AEC-Lec-2.pdf 

Electronic Devices Lecture-34: GATE-2017 Questions on the PN-Junction

 In this lecture, i solved gate 2017 questions on the pn junction.
 
 For Video Lecture follow the below link:  
https://youtu.be/ioTT2uVb-VU
 
For Lecture Material download from follow the below link:
 http://www.mediafire.com/file/v95aqqtise9l571/EDC-Lec-34.pdf

Electronic Devices Lecture-33: Previous GATE Questions on the PN-Junction

In this lecture, i solved previous year GATE  problems based on the pn- junction under equilibrium condition.

For Video Lecture follow the below link:  
https://youtu.be/3WLxLSejMWQ
 
For Lecture Material download from follow the below link:
http://www.mediafire.com/file/965s95e9nduk2n3/EDC-Lec-33.pdf 

Electronic Devices Lecture-32: Questions and Solutions on the PN-Junction

In this lecture, i solved few problems based on the pn- junction under equilibrium condition.


For Video Lecture follow the below link:  
https://youtu.be/rs1XrOKXLq4
 
For Lecture Material download from follow the below link:
http://www.mediafire.com/file/h37xry2lxkjmx14/EDC-Lec-32.pdf 

Electronic Devices Lecture-31: The PN-Junction: Part 4

In this lecture, i discussed about the charge density, electric field distribution and the derivation of depletion layer width.
For Video Lecture follow the below link:  
https://youtu.be/7k0fstxOJcI
 
For Lecture Material download from follow the below link:
http://www.mediafire.com/file/2apw3mcrnoxqcr0/EDC-Lec-31.pdf 

Electronic Devices Lecture-28,29&30: The PN-Junction: Part 1,2,3

In these lecture i discussed following topics:
1) How to form a pn junction
2) Applications of pn junction
3) Charge neutrality in n-type and p-type semiconductors
4) PN junction behavior in Equilibrium
5) The contact potential in the pn junction

For Video Lectures follow the below links: 

 Lecture 28:
 https://youtu.be/9z0f1Orc4wM

Lecture 29: 
https://youtu.be/wTb1qMC6YVs 

Lecture 30:
https://youtu.be/RcWp_jhvosk 


  For Lecture Material download from follow the below link: 
http://www.mediafire.com/file/98cul0cxa7h0e4z/EDC-Lec-28%2C29%2C30.pdf 

Electronic Devices Lecture-27: Problems on The Potential Variation in Graded Semiconductor-2

In this lecture i solved two gate problems on The Potential Variation in Graded Semiconductor.
and i am uploading important points in semiconductor theory.

For Video Lecture follow the below link:  
https://youtu.be/b4sBvF7qVPc
 
For Lecture Material download from follow the below link: 
http://www.mediafire.com/file/qmljrp3mxtmiejw/EDC-Lec-27.pdf 

Electronic Devices Lecture-26: The Potential Variation in Graded Semiconductor

In this lecture, i discussed about the potential variation in graded semiconductor. i.e how the electric field is generated in the semiconductor bar due to non uniform doping.

For Video Lecture follow the below links:  
https://youtu.be/LOPPUYEZCuY
 
For Lecture Material download from follow the below link:
http://www.mediafire.com/file/oiy2s57tzsz8c8w/EDC-Lec-26.pdf

Electronic Devices Lecture-24: Generation and Recombination of charge carriers

In this lecture, i discussed about the generation and recombination of charge carriers in semiconductors. and plot the graph between the excess hole concentration distribution with respect to time.


For Video Lecture follow the below links:  
https://youtu.be/g89fPzyBLac 


For Lecture Material download from follow the below link:
http://www.mediafire.com/file/t5fzg8i54414hcd/EDC-Lec-24.pdf 

Electronic Devices Lecture-23: Problems on Steady state carrier injection

In this lecture, i solved five problems on steady state carrier injection.


For Video Lectures follow the below links:  

https://youtu.be/EFT3mpi8RMM

https://youtu.be/R5sjC82MzbY

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/slaetff92a231cc/EDC-Lec-23.pdf 

Electronic Devices Lecture-22: Diffusion and Recombination: Steady state carrier injection-Part 2&3

In this lecture, i discussed about the steady state carrier injection. i.e i discussed the injection of excess carrier concentration in p-type semiconductor. and also shown how the excess carrier concentration distribution along the distance x and  the injection of minority carrier concentration in p-type semiconductor. and also shown how the excess carrier concentration distribution along the distance x.


For Video Lectures follow the below links:  

https://youtu.be/M8jZzutqfs0 

https://youtu.be/ts1XdZLRqfY

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/81w0s8knz4gkhr1/EDC-LEC-22_%28PART_2%263%29.pdf 

Electronic Devices Lecture-22: Diffusion and Recombination: The Continuity Equation-Part 1

In this Lecture, i discussed about the diffusion and the effect of recombination and also defined what is the continuity equation.

For Video Lecture follow the below link:  
https://youtu.be/l9X8S2bCWAc

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/x2hxfk2ktr1pqa9/EDC-Lec-22_%28Part-1%29.pdf 

Electronic Devices Lecture-21: Problems on Fermi level Concept

In this lecture, i discussed few problems on Fermi level concept.

For Video Lecture follow the below link:  
https://youtu.be/sXNklMWHpfU

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/8fuefjok94w55mx/EDC-Lec-21.pdf 

Electronic Devices Lecture-20: Fermi level variations in semiconductors

In this lecture, i discussed about temperature dependence of carrier concentrations and Fermi level variations in semiconductors.

For Video Lecture follow the below link:  
https://youtu.be/T_S9Huq-v5c

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/ddbdm3m3icfd2sh/EDC-Lec-20.pdf 

Electronic Devices Lecture-19: Carrier Concentrations in Semiconductor

In this lecture, i discussed about the carrier concentrations in semiconductors. i.e what is Fermi-Dirac distribution function, what is Fermi level and hole and electron concentrations at equilibrium in semiconductors.

For Video Lecture follow the below link:  
https://youtu.be/wcSVTOPvRjM

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/7aa0ng303uau3o2/EDC-Lec-19.pdf 

Digital Circuits Lecture-81: Discussion on Previous GATE Questions based On Shift Registers

In this Lecture, I solved some previous GATE questions based on shift registers and ring counters.

For Video Lecture follow the below link:  
https://youtu.be/6NhE7pgOugA

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/5z445bp7bakqeqb/DE-Lec-81.pdf

Digital Circuits Lecture-80: Jhnson's Counter ( Twiated Ring Counter )

In this Lecture, i explained about the Johnson's counter or twisted ring counter.

For Video Lecture follow the below link:  
https://youtu.be/oHXBRdVAqWc

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/41wcezdarw061zd/DE-Lec-80.pdf 

Digital Circuits Lecture-79: Ring Counter

In this Lecture, i explained about the ring counter and its application.

For Video Lecture follow the below link:  
https://youtu.be/j_NrUIwj1gc

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/vmdlvygch22u8t2/DE-Lec-79.pdf 

Digital Circuits Lecture-78: Universal Shift Register

In this lecture, i discussed about the universal shift register.

For Video Lecture follow the below link:  
https://youtu.be/mdCOobAGteI

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/b84qzobfu1h6biu/DE-Lec-78.pdf 

Digital Circuits Lecture-77: Bidirectional Shift Register

In this lecture, i discussed about the bidirectional shift register.

For Video Lecture follow the below link:  
https://youtu.be/EjQdtsZDKdQ

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/zlymmj9u6d2jd96/DE-Lec-77.pdf 

Digital Circuits Lecture-76: Parallel-in Serial-out (PISO) Shift Register

In this lecture, i discussed about the parallel-in serial-out shift register and its applications.

For Video Lecture follow the below link:  
https://youtu.be/zUBYXdOnDrw

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/dvg5cb1z8z6kxbg/DE-Lec-76.pdf 

Digital Circuits Lecture-75: SIPO and PIPO Shift Register

In this lecture, i discussed about serial-in parallel-out and parallel-in parallel-out shift registers.
 
For Video Lecture follow the below link:  
https://youtu.be/Qo3x41US0KI

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/rfrgxq5xjab8kcb/DE-Lec-75.pdf 

Digital Circuits Lecture-74: Shift Registers

In this Lecture, i discussed following topics.
1. What is a shift register
2. Types of shift registers
3. Operation of Serial-in Serial-out right-shift and left-shift register

For Video Lecture follow the below link:  
https://youtu.be/SsKGr9iqxAQ

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/tzqd2k4gaqgh8hw/DE-Lec-74.pdf 

Digital Circuits Lecture-73: Introduction to Registers

In this lecture, i explained what is a register, what is the logic diagram of register and how the register is storing binary information.and also discussed what is load control input and how its control the operation of register.

For Video Lecture follow the below link:  
https://youtu.be/ythoH5cuF_o

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/mmrrgsgf8fxxwij/DE-Lec-73.pdf 

Digital Circuits Lecture-72: GATE Questions on Sequential circuits-2

In this lecture, i discussed some previous GATE questions on sequential circuits.

For Video Lecture follow the below link:  
https://youtu.be/jJ6gEXgHfJ8

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/72jzx1rm188e7gu/DE-Lec-72.pdf 

Digital Circuits Lecture-71: GATE Questions on Sequential circuits-1

In this lecture, i discussed ten previous GATE questions on sequential circuits.

For Video Lecture follow the below link:  
https://youtu.be/RJca2JKlxo8

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/o2k76bd5yzb8co3/DE-Lec-71.pdf 

Digital Circuits Lecture-70: Discussion on Previous GATE Questions on Sequential circuits

In this lecture, i discussed some previous GATE questions on sequential circuits.


For Video Lecture follow the below link:  
https://youtu.be/fty6w7s21L8

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/di8kv8vsl88siys/DE-Lec-70.pdf 

Digital Circuits Lecture-69: Self starting and lock-out problems in syncronous counters

In this lecture, i discussed about what is self starting and lock-out problems using design om mod-6 counter and a counter which goes through some predetermined states.

For Video Lecture follow the below link:  
https://youtu.be/M4YZbYBwKc8

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/51dnakscs36yawu/DE-Lec-69.pdf 

Digital Circuits Lecture-68: Design of Synchronous MOD-10 Counter

In this lecture, i discussed about design of MOD-10 or decade or BCD counter.and also design of MOD-6 down counter.

For Video Lecture follow the below link:  
https://youtu.be/7MS0Ic1c-2w

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/cdq3s6ok8m37kdu/DE-Lec-68.pdf 

Digital Circuits Lecture-67: 3-bit Synchronous DOWN Counter using JK-FF

In this lecture, i discussed how to design 3-bit or MOD-8 synchronous up counter using JK-FF.

For Video Lecture follow the below link:  
https://youtu.be/8CRWN_0RGyU

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/p1xa3bucghzh1yc/DE-Lec-67.pdf 

Digital Circuits Lecture-66: 3-bit Synchronous DOWN Counter

In this lecture, i discussed how to design 3-bit or MOD-8 synchronous up counter using D-FF.


For Video Lecture follow the below link:  
https://youtu.be/zVmGkgseNZo

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/3tqthzhy1qk7na4/DE-Lec-66.pdf 

Digital Circuits Lecture-65: 3-bit Synchronous UP Counter

In this lecture, i discussed how to design 3-bit synchronous up counter or MOD-8 synchronous up counter using T-FF.

For Video Lecture follow the below link:  
https://youtu.be/AzDGDqLWJQg

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/ew8z8wwzq3sr7pq/DE-Lec-65.pdf 

Digital Circuits Lecture-64: 2-bit Synchronous UP/DOWN Counters

In this lecture, i discussed how to design 2-bit synchronous up counter using JK-FF and T-FF.and also shown how to design 2-bit down counter using JK-FF.


For Video Lecture follow the below link:  
https://youtu.be/-jKomdoCiGo

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/0yl49ks3h4x2q1w/DE-Lec-64.pdf 

Digital Circuits Lecture-63: Design of Synchronous Counters

In this lecture, i discussed how to design of design of synchronous counters is discussed. and also discussed design of 2-bit synchronous up counter.


For Video Lecture follow the below link:  
https://youtu.be/QqdiA3OJ-rY

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/1n3d4gme8c5v45w/DE-Lec-63.pdf 

Digital Circuits Lecture-62: Asynchronous Counters- Part 7

In this Lecture, i discussed about the cascading of ripple counters and drawbacks in ripple counters and how to overcome them.



For Video Lecture follow the below link:  
https://youtu.be/ocy4eoDmXko

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/dv96h5dj2savrx6/DE-Lec-62.pdf 

Digital Circuits Lecture-61: Asynchronous Counters- Part 6

In this Lecture, i discussed how to design up/down ripple counter, i.e same circuit is performing both up and down counting.


For Video Lecture follow the below link:  
https://youtu.be/HE-m1t6gGlM

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/4jo6mcw58z6d9ax/DE-Lec-61.pdf 

Digital Circuits Lecture-60: Asynchronous Counters- Part 5

In this lecture, i shown how to design MOD-9 ripple up counter, MOD-10 ripple down counter and BCD ripple counter.

For Video Lecture follow the below link:  
https://youtu.be/otH-tweAo7c

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/a6bad61rum3bjf0/DE-Lec-60.pdf 

Digital Circuits Lecture-59: Asynchronous Counters- Part 4

In this lecture, i discussed how to design MOD-6 ripple up counter and MOD-5 ripple down counter. and also discussed what is preset and clear inputs.


For Video Lecture follow the below link:  
https://youtu.be/I39JL-LvSi8

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/s6eqt8mj6216tz6/DE-Lec-59.pdf 

Digital Circuits Lecture-58: Asynchronous Counters- Part 3

In this lecture, i discussed about how to design ripple counter using D-FF. i.e i designed 2 bit up counter using negative edge triggered D-FF and 3-bit down counter using positive edge-triggered D-FF.

For Video Lecture follow the below link:  
https://youtu.be/e2TbLs0k64A

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/af4dnahqbjoozz9/DE-Lec-58.pdf 

Digital Circuits Lecture-57: Asynchronous Counters- Part 2

In this lecture, i discussed how to design 3-bit ripple counter or MOD-8 ripple counter, 4-bit ripple counter or MOD-16 ripple counter.


For Video Lecture follow the below link:  
https://youtu.be/Fjln89ERE2E

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/n0850xtrqtapn2w/DC-Lec-57.pdf 

Digital Circuits Lecture-55&56: Asynchronous Counters- Part 1

In this lecture, i discussed about the asynchronous or ripple counters.
 i.e  1. How a JK FF go through some sequence when we applied a clock.
      2. 2-bit up counter using negative edge triggered JK - FF
      3. 2-bit up counter using negative edge triggered T - FF
      4. 2-bit up counter using positive edge triggered T - FF
      5.  2-bit down counter using positive edge triggered JK - FF

For Video Lecture follow the below link:  
https://youtu.be/UCWIfkxeSHQ

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/smd8yg2xfqk4rpe/DE-Lec-55%2656.pdf 

Electronic Devices Lecture-17&18: Temperature Effects on Metal and Semiconductor Parameters

In this lecture, i explained how the metal and semiconductor resistance and conductivity changes with temperature and also solved few problems based on conductivity, drift and diffusion.
And also discussed how the conductivity varies with respect to temperature.


For Video Lectures follow the below link:  
https://youtu.be/Ij6Hci5C26c 

https://youtu.be/aiTcSWZ0tJ4


For Lecture Material download from follow the below link:
http://www.mediafire.com/file/xedzfa2qpwwbg4b/EDC-Lec-17%2618.pdf 

Electronic Devices Lecture-16: Drift and Diffusion Currents

In this lecture, concept of drift and diffusion currents is discussed.and also given Einstein relationship for the diffusion coefficient and mobility.

For Video Lecture follow the below link:  
https://youtu.be/jhZiEon3nx4


For Lecture Material download from follow the below link:
http://www.mediafire.com/file/ooyondotwf3ldcm/EDC-Lec-16.pdf 

Electronic Devices Lecture-15: Discussion on GATE Questions - EDC

In this lecture, i solved few gate problems from basic concepts in EDC.


For Video Lecture follow the below link:  
https://youtu.be/trD4oCQlMNA


For Lecture Material download from follow the below link:
http://www.mediafire.com/file/2d6vjqp3ipb0pcc/EDC-Lec-15.pdf 

Electronic Devices Lecture-14: Summary and Problems on Basic Concepts in EDC

In this lecture, i have given a summary on formulas in EDC and also solved few problems based on these formulas.

For Video Lecture follow the below link:  
https://youtu.be/DtOoBgQr1ww


For Lecture Material download from follow the below link:
http://www.mediafire.com/file/jlwtnamp8dfbbor/EDC-Lec-14.pdf 

Electronic Devices Lecture-13: Charge densities and conductivity in semiconductors

In this lecture, i discussed about the charge densities in semiconductors and also how to find conductivity in intrinsic and extrinsic semiconductors. and also discussed how the mobility changes with temperatures.

For Video Lecture follow the below link:  
https://youtu.be/Jesnzuw3e3k


For Lecture Material download from follow the below link:
http://www.mediafire.com/file/7g970zfhk4496ns/EDC-Lec-13.pdf 

Electronic Devices Lecture-12: Extrinsic Semiconductor

In this lecture , i explained about the extrinsic semiconductors, i.e how to make n-type and p-type semiconductors and their energy band diagrams. and also discussed about the crystal lattice structures of n-type and p-type semiconductors.


For Video Lecture follow the below link:  
https://youtu.be/Xf_sEa1eEBI



For Lecture Material download from follow the below link:
http://www.mediafire.com/file/gh7tfcy3wk9ps1u/EDC-Lec-12.pdf 

Electronic Devices Lecture-11: Intrinsic Semiconductor

In this lecture, i discussed about the intrinsic semiconductor.i.e energy band diagram of intrinsic semiconductor and crystal structure are explained.

For Video Lecture follow the below link:  
https://youtu.be/y7FAN1csR4w



For Lecture Material download from follow the below link:
http://www.mediafire.com/file/vye2m2cbrpmmii4/EDC-Lec-11.pdf 

Electronic Devices Lecture-10: Bonding Forces In solids and Holes in semiconductors

In this lecture, concept of bonds in solids and hole mechanism in semiconductor are explained.

For Video Lecture follow the below link:  
https://youtu.be/rX7HXeFW6wA



For Lecture Material download from follow the below link:
http://www.mediafire.com/file/e9hed2sm8v15bxh/EDC-Lec-10.pdf 

Electronic Devices Lecture-9: Mobility and Conductivity of a Metal

In this lecture, i discussed about the types of semiconductors, transport phenomena in semiconductor, mobility and conductivity of metal.and also given expressions for drift speed, current density, drift speed and conductivity.


For Video Lecture follow the below link:  
https://youtu.be/EnKvBnIIqd8



For Lecture Material download from follow the below link:
http://www.mediafire.com/file/66wp6o8mqt9xpxh/EDC-Lec-9.pdf 

Electronic Devices Lecture-8: Direct and Indirect Semiconductor

In this lecture, i explained the classification of semiconductors based on its energy band structure and applications of them.


For Video Lecture follow the below link:  
https://youtu.be/nat4IE9rJ8k



For Lecture Material download from follow the below link:
http://www.mediafire.com/file/3z9obgi85lvspub/EDC-Lec-8.pdf 

Electronic Devices Lecture-7: Energy-band Structure of Insulator, Semiconductor and Metal

In this lecture, i discussed the concept of energy-band structure of an insulator, semiconductor and metal. and also discussed the relationship between energy gap and temperature in semiconductor.

For Video Lecture follow the below link:  
https://youtu.be/ZZ5SR8uxpxY



For Lecture Material download from follow the below link:
http://www.mediafire.com/file/19uahvizsrhqyn7/EDC-Lec-7.pdf 

Electronic Devices Lecture-5 & 6: The Nature of the Atom & The Energy-band Theory of Crystals

In lecture 5: I discussed about the nature of the atom, in this we should remeber some expression for the GATE exam point of view.

In lecture 6: In this lecture, i discussed about the electronic configuration of 4th group elements, the orbital model of silicon atom then i discussed about the energy-band theory of crystals.



For Video Lectures follow the below link:  
 https://youtu.be/X7CRky-fDe4

https://youtu.be/b_G5jYGvLUQ 



For Lecture Material download from follow the below link:
http://www.mediafire.com/file/k2roo5a5f2msu9x/EDC-Lec-5%266.pdf 
 

Electronic Devices Lecture-4: Charge, Current, Field and Energy

In this lecture, i discussed about electron charge, current, field intensity, potential and energy which will be helpful in learning electronic devices course.


For Video Lecture follow the below link:  
https://youtu.be/i9QyaRrDruE

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/0q5bd952gzt0hbg/EDC-Lec-4.pdf 

Electronic Devices Lecture-3: Semiconductor Materials

In this lecture, i discussed about different types of semiconductors and their applications.



For Video Lecture follow the below link:  
https://youtu.be/TL0S8h2UKXE

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/ico5q4udefgfuaz/EDC-Lec-3.pdf 

Digital Circuits Lecture-54: Master-Slave D Flip-Flop

In this lecture, i discussed abut the master-slave D flip-flop or edge triggered flip-flop. 


For Video Lecture follow the below link:  
https://youtu.be/Obur9ky7pVs

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/4y1v49037tcdb7t/DE-Lec-54.pdf 

Digital Circuits Lecture-53: Race Around Condition

In this Lecture, i explained what is the race around condition and in which flip-flop it occurs. 


For Video Lecture follow the below link:  
https://youtu.be/7u4gO_6UKY4

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/o6uek1z52285h4u/DE-Lec-53.pdf 

Digital Circuits Lecture-52: Conversion of Flip - Flops

In this lecture, i explained the concept of conversion of flip-flops. i.e i shown how to covert SR to JK, D, and T - FF and vice versa.


For Video Lecture follow the below link:  
https://youtu.be/GK5SG1OI4sQ

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/r5v3mbo97a38ru4/DE-Lec-52.pdf 

Digital Circuits Lecture-51: FLIP - FLOPS

In this lecture, i discussed about the all flip -flops i.e SR, JK, D and T flip - flop. in this i explained their operation and how to draw functional table, characteristic table and excitation table for all the flip-flops.

For Video Lecture follow the below link:  
https://youtu.be/OTUURs7FLsI

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/n6j7ibwg8x248a9/DE-Lec-51.pdf 

Digital Circuits Lecture-50: LATCHES

In this lecture, i discussed about the latches. i.e SR and D latches. in this i discussed about the SR latch using NOR gates and NAND gates, also discussed latches with control input. and explained D-latch operation.
i introduced what is preset and clear inputs.


For Video Lecture follow the below link:  
https://youtu.be/seG2CIcYF5A

For Lecture Material download from follow the below link: 
http://www.mediafire.com/file/8wzpq7kai0sbs1p/DE-Lec-50.pdf

Digital Circuits Lecture-49: Introduction to Sequential Circuits

In this lecture, i have given a brief introduction to sequential circuits.


For Video Lecture follow the below link:  
https://youtu.be/dW7b1CBpYIg

For Lecture Material download from follow the below link: 
http://www.mediafire.com/file/6fb0fq29pj891re/DE-Lec-49.pdf 

Digital Circuits Lecture-48: Designing combinational circuits

In this lecture, i discussed how to design a combinational circuits for given specifications or requirements.

For Video Lecture follow the below link:  
https://youtu.be/F4U6OwufIJs

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/no8bvvhe8vzn5p3/DE-Lec-48.pdf 

Digital Circuits Lecture-45: Demultiplexer

In this lecture, i discussed about the operation of demultiplexer.

For Video Lecture follow the below link:  
https://youtu.be/2W38QbSSn8Y

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/ks2syqit3uhvhui/DE-Lec-45.pdf 

Digital Circuits Lecture-44(C): Implementation of large size MUX using smaller size MUX

In this Lecture, i have shown how to implement large size multiplexers using smaller size multiplexers.


For Video Lecture follow the below link:  
https://youtu.be/H2wCE6Z6xbg

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/961z5a6jn8k0ckt/DE-Lec-44%28c%29.pdf 

Digital Circuits Lecture-44(B): Implementation of Boolean function using multiplexers

In this lecture, i discussed how to implement Boolean functions using multiplexer. and also shown how to implement all logic gates using 2 by 1 multiplexer.


For Video Lecture follow the below link:  
https://youtu.be/UYtk3FsMcB4

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/n6chhu285uunaq7/DE-Lec-44.pdf 

Digital Circuits Lecture-43: Decoders

In this lecture, i discussed about the decoders, i.e how to design 2 by 4 decoder and 3 by 8 decoder. and also discussed decoder with enable inputs.
and also shown
design of a 2 -to-4 line decoder with active high enable input
design of a 2 -to-4 line decoder with active low enable input  
design of a 2 -to-4 line decoder with active low outputs

For Video Lecture follow the below link:  
https://youtu.be/xWmB_91SZEM

For Lecture Material download from follow the below link:
 http://www.mediafire.com/file/gclxpzk6ohi8dbb/DE-Lec-43-1.pdf

http://www.mediafire.com/file/ey49niiofeuxnsd/DE-Lec-43.pdf 

Digital Circuits Lecture-42: Encoders

                                In this lecture, i discussed about the encoders, i.e normal encoder and priority encoder. and i discussed what are the advantages of encoder and also i have shown how to implement the logic diagram from the truth table.

For Video Lecture follow the below link:  
https://youtu.be/RTsaVc3vYYg

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/2zuab10pztqffke/DE-Lec-42.pdf 

Digital Circuits Lecture-41: Magnitude Comparator

In this lecture, i discussed how design a 2-bit and 3-bit magnitude comparators.

For Video Lecture follow the below link:  

https://youtu.be/-Ufcd3pYihk

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/22vj9iwoanx1kwn/DE-Lec-41.pdf 

Digital Circuits Lecture-40: Binary Multiplier

                             In this lecture, i discussed the binary multiplier i.e 2-bit by 2-bit multiplier and 3-bit by 2-bit multiplier and implementations using combinational circuits.

For Video Lecture follow the below link: 
https://youtu.be/C45ZKVjC72A

For Lecture Material download from follow the below link:
 http://www.mediafire.com/file/xwoqphwe4kt5s1e/DE-Lec-40.pdf

Digital Circuits Lecture-39: Subtractors

In this lecture, i discussed subtractors in digital systems. i.e half subtractor, full subtractor, binary subtractor and adder cum subtractor. and also implemented half subtractor and full subtractor using minimum number of nand gates and nor gates.

For Video Lecture follow the below link: 
https://youtu.be/ijjJec_GqX0

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/m4ikh38m9evoy6i/DE-Lec-39.pdf 

Digital Circuits Lecture-38: Implementations of Adders using universal gates

                                  In this Lecture, i have shown how to implement half adder and full adder using minimum number of only nand gates and only or gates.


For Video Lecture follow the below link: 
https://youtu.be/TZ174l_SClQ

For Lecture Material download from follow the below link:
 http://www.mediafire.com/file/2zs6k6dn325zkd5/DE-Lec-38.pdf 

Digital Circuits Lecture-37: Adders - Part 2 ( carry lookahead adder)

                                   In this lecture, i discussed the operation of carry lookahead adder and logic circuit diagram. and also discussed why carry lookahed adder is a high speed adder.


For Video Lecture follow the below link: 
https://youtu.be/C8tDw1-6SFk

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/ofapt8c87z5jk17/DE-Lec-37.pdf 

Digital Circuits Lecture-36: Adders - Part 1

                         In this lecture, i discussed half-adder, full-adder and binary adder. i.e their block diagrams, truth tables and implementations.


For Video Lecture follow the below link: 
https://youtu.be/O6Q7QLzIgB4

For Lecture Material download from follow the below link:
 http://www.mediafire.com/file/dl9w5ftyduuu13d/DE-Lec-36.pdf

Digital Circuits Lecture-35: Introduction to Combinational Circuits

                                   In this lecture, i have given a brief introduction to combinational circuits, i.e why we need to study and what is combinational circuit, difference between combinational circuit and sequential circuit etc.

For Video Lecture follow the below link: 
https://youtu.be/gx6TmCmJdtc

For Lecture Material download from follow the below link:
 http://www.mediafire.com/file/07o13en2kdvg5w7/DE-Lec-35.pdf
 

Digital Circuits Lecture-34: Applications of EX-OR and EX-NOR Functions

                              In this Lecture, i discussed the applications of Ex-OR and EX-NOR functions as even parity generator and checker, odd parity generator and checker which are used in error detecting circuits in digital systems.

For Video Lecture follow the below link: 
https://youtu.be/UF11unhc_os

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/25zp082db4pquga/DE-Lec-34.pdf 

Solutions to Questions on Boolean algebra and logic gates

                Hai all, In this post i am giving a link for the PDF of solution sheet for some problems on Boolean algebra and logic gates.

Download Sheet From the below link:

http://www.mediafire.com/file/j7kxy71kyxne7xc/solutions_to_questions_on_Boolean_algebra.pdf

Problem Sheet On K-map

                         In this post i am giving a link for the PDF of Problem sheet on  gate level minimization i.e on K-map and implementations using two-level gates, try to solve all the problems. i will upload solutions to specific problems. these problems i have taken from Digital Design by Morris Mano.

Download Sheet From the below link:

http://www.mediafire.com/file/r8lja4mhl2nn3tk/problems_on_gate_level_minimization.pdf 

Digital Circuits Lecture-33: Two-Level and Multi-Level Implementations

                              In this lecture, concept of two-level and multi-level implementations is discussed with some examples. and also discussed degenerate forms and non degenerate forms of two-level implementations.

For Video Lecture follow the below link: 
https://youtu.be/MEilDu-YrmM

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/lw71fpb1rqpsk7j/DE-Lec-33.pdf 

Digital Circuits Lecture-31: Discussion on previous GATE Questions from K-map

                                  In this lecture i solved previous GATE problems from K-map and also given some short cut methods to find the solutions.


For Video Lecture follow the below link: 
https://youtu.be/ZraXILaTulw

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/j7s6u3ysab5zjza/DE-Lec-31.pdf 

Solution Sheets On Number System

Hai all, In this post i am giving a link for the PDF of answer key and solution sheets for some problems on Number system for the problem sheet which i uploaded earlier.

Download Sheet From the below link:

http://www.mediafire.com/file/ax077h04c2z0932/answer_keys_to_problems_on_number_systems.pdf

http://www.mediafire.com/file/707142wti5lioaa/solutions_to_problem_sheet_1_on_number_systems.pdf

http://www.mediafire.com/file/wsx4ugc4a659b2f/solution_to_problem_sheet_2_on_number_systems.pdf

Digital Circuits Lecture-30: Prime Implicants and Essential Prime Implicants

                          In this lecture, i discussed prime implicants and essential prime implicants in minimization of Boolean  functions using K-map with examples.


For Video Lecture follow the below link: 
https://youtu.be/01f68d_xUVk

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/pz53ciosg7lkjjl/DE-Lec-30.pdf 

Digital Circuits Lecture-29: Don't-Care Conditions in K-map

                               In this lecture, i discussed don't-care conditions on K-map and solved some examples based on don't-care conditions.

For Video Lecture follow the below link: 
https://youtu.be/1czUDagpW-c

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/recp0bh9f3hksms/DE-Lec-29.pdf

Digital Circuits Lecture-28: Five-Variable K-map

In this lecture, i discussed five-variable K-map with examples, and also solved few examples on 4-variable K-map.

For Video Lecture follow the below link: 
https://youtu.be/oDbFUxhOtCk

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/6fx8bqjxlw164ka/DE-Lec-28.pdf

Digital Circuits Lecture-27: Four-Variable K-map

In this lecture, i discussed four-variable K-map with examples.

For Video Lecture follow the below link: 
https://youtu.be/sxjIpkusniI

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/7npujd9ndfpm7rs/DE-Lec-27.pdf 

Digital Circuits Lecture-26: Three-Variable K-map

In this lecture, i discussed three-variable K-map with examples.

For Video Lecture follow the below link: 
https://youtu.be/ZJWdERJUMNs

For Lecture Material download from follow the below link: 
http://www.mediafire.com/file/41nbqjn12ekc2bj/DE-Lec-26.pdf 

 

Digital Circuits Lecture-25: Two-Variable K-map

In this lecture, i discussed two-variable k-map using minterms and maxterms with examples.

For Video Lecture follow the below link: 

https://youtu.be/MZaT_fNs4g4

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/71nfqctizk47toc/DE-Lec-25.pdf 

Digital Circuits Lecture-24: Introduction to the Karnaugh map (K-map)

In this lecture, i discussed why we need gate-level minimization and introduced K-map.


For Video Lecture follow the below link: 

https://youtu.be/1SiJx-I70hY

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/zqr202auem77byz/DE-Lec-24.pdf 

Important points and concepts in Boolean algebra and logic gates

                                 In this post i am giving important points and concepts in Boolean algebra and logic gates .Read all the concepts it will be helpful for gate as well as other competitive exams. 

Download the PDF file from the below link:

http://www.mediafire.com/file/7326o32u4xa2q07/Important_points_in_Boolean_algebra_and_logic_gates.pdf

Important points and concepts in Number systems

                                 In this post i am giving important points and concepts in number systems.Read all the concepts it will be helpful for gate as well as other competitive exams. 

Download the pdf file from the below link:

http://www.mediafire.com/file/ofc6ah2kc3oigkm/important_points_in_number_systems.pdf

Problem Sheet on Boolean algebra and logic gates

                        In this post i am giving a link for the PDF of Problem sheet on  Boolean algebra and logic gates, try to solve all the problems. i will upload solutions to specific problems and answer key for all the problems. these problems i have taken from STLC by A. Anand Kumar.

Download Sheet From the below link:

http://www.mediafire.com/file/1eh4zdwphc5f4lx/problems_on_Boolean_algebra_and_logic_gates-1.pdf

 http://www.mediafire.com/file/gs5zvfdn4dfwxb5/problems_on_boolean_algebra_and_logic_gatez-2.pdf

Problem Sheet On Number System

                        In this post i am giving a link for the PDF of Problem sheet on Number system, try to solve all the problems. i will upload solutions to specific problems and answer key for all the problems. these problems i have taken from STLC by A. Anand Kumar.

Download Sheet From the below link:

http://www.mediafire.com/file/53o3louc4b3ip2n/problems_on_number_systems-1.pdf 

http://www.mediafire.com/file/8vcrntl5i7qjilp/PROBLEMS_on_number_systens-2.pdf 

 

Digital Circuits Lecture-23: Representation of Boolean functions

                             In this lecture, concept of representation of Boolean functions is explained.i.e types of representations like SOP and POS forms and conversion between canonical forms, SSOP and SPOS. and also i solved few problems on SOP and POS forms.

For Video Lecture follow the below link: 

https://youtu.be/dUst2h2zf44

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/p37q443pte2m9o1/DE-Lec-23.pdf 

Digital Circuits Lecture-22: Discussion on GATE Questions from logic gates

In this lecture, i solved previous gate questions on logic gates.


For Video Lecture follow the below link:
https://youtu.be/rwvH9c8-x1U

For Lecture Material download from follow the below link:
http://www.mediafire.com/file/bm771cg6fuh5bq8/DE-Lec-22.pdf

Digital Circuits Lecture-21: Implementation of Boolean functions using logic gates

                                In this lecture, i discussed how to implement the logic functions using basic gates and universal gates and the differences between them.


For Video Lecture follow the below link: 

https://youtu.be/XcASAWt9_vA

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/wig42fiw9uibdtp/DE-Lec-21.pdf

Questions on basics of Signals and Systems

Questions on basics of Signals and Systems:

                           In this post i am uploading some questions from oppenheim basic problems.try do them if any problem is there just mail me . my mail id: venky.mannem@gmail.com.
i will upload answers by 4th June.

Download problem sheet from the below link:

http://www.mediafire.com/file/2k84kwq79y85q3a/SS-QUESTIONS_ON_BASICS_OF_SIGNALS.pdf 

Digital Circuits Lecture-20: Alternate Logic Gates (Bubbled gates)

Digital Circuits Lecture-20: Alternate Logic Gates (Bubbled gates)
                 In this lecture, i discussed about alternate symbols for logic gates or also called bubbled gates.
 

For Video Lecture follow the below link: 

https://youtu.be/bBjMPMRpOJs

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/na82q5nwpmx1o1x/DE-Lec-20.pdf

Digital Circuits Lecture-19: NOR Gate Implementations

Digital Circuits Lecture-19: NOR Gate Implementations
                                           In this lecture, i shown how to implement other logic gates and Boolean functions using only NOR gates.

For Video Lecture follow the below link: 

https://youtu.be/Q45yO_W2uxw

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/ok2c7aaa5fbvvdn/DE-Lec-19.pdf

Digital Circuits Lecture-18: NAND Gate Implementations

Digital Circuits Lecture-18: NAND Gate Implementation
                                   In this lecture, i shown how to implement other logic gates and Boolean functions using only NAND gates.

For Video Lecture follow the below link: 

https://youtu.be/elkc1_RSvBw

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/0882i8b20pralo3/DE-Lec-18.pdf

Digital Circuits Lecture-17: Logic Gates (Part-2)

Digital Circuits Lecture-17: Logic Gates (Part-2):
                                        In this Lecture, i discussed the universal gates and their symbols and truth tables, special gates , their symbols, truth tables and their properties.

For Video Lecture follow the below link: 

https://youtu.be/Y4vtuZuOp90

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/rg7c6uu9q0uqa74/DC-Lec-17.pdf 

Digital Circuits Lecture-1-14: Number Systems

Digital Circuits Lecture-1-14: Number Systems
                            In these lectures i have discussed about various number systems and conversion between number systems. and also discussed Complements, binary codes, alpha numeric codes, subtraction using complements, how to represent a negative number using sign magnitude form.

For Video Lecture follow the below link:

https://youtu.be/EEeCBv-lDgU 

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/m418bxpbb0xnd9k/DEC-Number_Systems.pdf 

Digital Circuits Lecture-16: Logic Gates (Part-1)

Digital Circuits Lecture-16: Logic Gates (Part-1):
                         In this lecture, i discussed about logic gates, i.e why we need to study about logic gates and discussed about three basic gates AND, OR and NOT gate, their logic symbols, general expressions and logical expressions and truth tables.

 

For Video Lecture follow the below link: 

https://youtu.be/1qHuVDQ9obc

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/i463h7n4y77740q/DC-LEC-16.pdf 

Digital Circuits Lecture-15: Boolean algebra-Discussion on Questions (Part-4)

Digital Circuits Lecture-15: Boolean algebra-Discussion on Questions (Part-4)

                                       In this lecture, i discussed few problems on minimization of Boolean functions and also solved previous GATE questions from Boolean algebra.

 

For Video Lecture follow the below link: 

https://youtu.be/ozXj0da5AzU

For Lecture Material download from follow the below link:

http://www.mediafire.com/file/q8imsyb1h3jmjqx/DC-Lec-15.pdf