Digital Electronics

State the associative property of boolean algebra.

List different digital logic families.

Differentiate between a conventional encoder and a priority encoder.

Draw the truth table for a half adder circuit and write the boolean expressions for sum and carry.

Write excitation table of D flip - flop.

Write about race around condition.

What are the advantages and disadvantages of R-2R ladder D/A converter.

State the advantages and applications of sample and hold circuits.

Differentiate between static RAM and dynamic RAM.

What is a programmable logic array? How it differs from ROM.

Perform each of the following conversions : a. $(444.456{)}_{10}$ in to octal number. b. $(A3B{)}_{16}$ in to decimal number. c. $(2D5{)}_{16}$ in to binary number. d. $(115{)}_{10}$ in to hexadecimal number.

Compare the characteristics of TTL and CMOS logic families.

Using K-map, minimize the expression $$F(A,B,C,D)=\sum m(1,5,7,9,11,13,15).$$

Explain 4 - bit serial in parallel out register.

Draw the logic diagram and timing sequence of a 4 - bit ring counter.

Explain the terms accuracy and resolution for D/A converter.

Differentiate EPROM and PROM.

Define the following with one example : a. Error correcting codes. b. Gray code. c. Hamming distance. d. Even and odd parity code.

Using the Quine - McCluskey method, obtain the minimal sum of product expression of the following function. $$F(A,B,C,D)=\sum m(0,1,3,7,8,9,11,15).$$

a. Convert J-K flip - flop to S-R flip - flop. b. Design a 4 - bit synchronous counter.

With a neat block diagram, describe the working of a successive approximation A/D converter and illustrate it with a suitable example.

Write a notes on FPGA (field programmable gate array) with a neat diagram.