DIGITAL ELECTRONICS — Summer 2023

Write any three boolean laws with boolean expressions.

Explain, how basic gates can be realized using NOR gates.

Convert the following numbers form given base to the base indicates

(306.D) = (_______)162 (ii) (673.124) = (________)82 (iii)(11010.11) = (________)210 (iv) (41) = (________)102

(ABFF.FFCD) = (_______)168 (vi) Obtain 1’s and 2’s complement of binary numbers 1010101 and 0111000

Evaluate using Boolean algebra A B C + A B C + A B C + A B C + A B C

Explain 3-line to 8-line decoder with logic diagram.

Explain parameters of Logic Families Noise margin, Fan out, Propogation delay, Power dissipation and compare ECL and TTL logic families.

State and prove De Morgan’s theorem which convert a sum into a product form and vice versa with necessary truth tables.

Explain the difference between positive logic and negative logic with suitable examples.

Convert the following expressions:

Y= AB+AC+BC into standard SOP form (ii) Y= (A+B). (A+C). (B+C) into the standard POS form

Simplify the following Boolean function using Kmap F(w,x,y,z) =  () and the don’t care conditions d (w,x,y,z) =  ()1

What is Shift register? Name different types of Shift registers.

Explain working of Half adder circuit with necessary diagram and truth table.

Explain working of Multiplexer with necessary diagram. Write applications of Multiplexer.

Explain magnitude comparator.

Write short note on memory.

Design 3-bit even parity generator circuit.

What is Sequential logic circuit? Distinguish between combinational and sequential logic circuit.

Write applications of Flip Flops.

Design 4-bit Binary to Gray code converter.

Implement Tflip flop using Dflip flop.

Explain arithmetic micro-operations briefly.

Explain working of J-Kflip flop with circuit diagram and truth table.

Write applications of decoder.

What is Finite state machine? How do we use it for digital systems?

Explain ripple counter with necessary diagram.2