DIGITAL ELECTRONICS — Summer 2021

1. Give logic diagram and truth-table of EX-OR Gate 2. Subtract (3250-72532) using 10s compliment10 3. F= x y + x' y' + y' z implement with gates

Define : 1) Fan in 2) Fan out 3) Propagation Delay 4) Noise margin

Design the full adder and full subtractor

Covert to another canonical form 1. F(A,B,C)=∑(1,7) 2. F(W,X,Y,Z)=П(1,2,5,15) 3. F(a,b,c,d,e)=∑(1,2,7,8,9,10,11,13,14,23)

State and prove De Morgan’s Law. Find the complement of F(A,B,C)=∑(1,7)

Design 3 – bit Gray code to binary code converter.

Draw the logic diagram of 3:8 Decoder and write the truth table. Explain its operation.

Simplify: A’B + A’BC’ + A’BCD + A’BC’D’E

Implement the following Boolean function F= (A + B′) (CD + E) with NAND gates

List the characteristics of Logic families. Explain DTL logic family in brief

Explain combinational logic circuit and sequential logic circuit

Reduce using K-mapping the expression F = Σ(1,5,6,12,13,14 )+d(2,4) where d is don’t care condition. Find out SOP

Simplify the Boolean function using the tabulation method F(A,B,C,D,E,F,G)=∑(20,28,38,39,52,60,102,103,127)

Explain the operation of master slave J-Kflip flop

Write the note on SR and JK Flip Flop

Simplify the following Boolean function F(A,B,C,D) =Σ(0,1,2,5,8,9,10).Implement the simplified equation using NAND gates only

Explain the working of 3-bit Ring counter with necessary diagram using negative edge triggered Dflip - flop.

Design a combinational circuit that will detect identical bits for 2 bit number

Explain BCD Ripple counter and draw its logic diagram and timing diagram1

Write a note on ALU

Explain arithmetic, logic and shift micro operation

Design a counter using D-flip flop, having the state diagram as

Realize Ex-OR gate and NOT gate using NOR gate.

Explain state table, state diagram with example.

Explain 4 bit magnitude comparator with necessary Boolean expression.