Digital Circuits And Logic Design Question Paper of 3rd Semester CSE74 Download Previous Years Question Paper 3

Roll No.

Total No. of Questions : 09]

DIGITAL CIRCUITS & LOGIC DESIGN

SUB.IECT CQDE : CS - 2O5

Paper ID : [AO453]

Time : 03 Hours

Instruction to Candidates:

1) Section - A is Compulsory.

2) Attempt any Four questions from Section - B.

3) Attempt any Two questions from Section - C.

Section - A

Q1)

a) Solve (10101)₂, - (10011)₂.

b) Subtract (i1001), from (11101)2 using 2's complement method?

c) State De-Morgan. theorem?

d) Name three types of TTL gates?

e) .What does the term driver mean-in a decoder?

f)' List two applications ‘of Multiplexer?

g) Which flip flop is preferred for data transfer?

h) What is a volatile memory?

i) Which is the fastest ADC 'among available ADCs?

j) What is a ring counter?

Q2) What is a BCD code? What are its advantages and disadvantages?

Q3) Prove that if A + B = A + C and A + B = A' + C, then B = C.

Q4) With the help of circuit diagram explain working of a two input TTL NAND

gate?

Q5)Describe with diagram internal architecture of PAL?

Q6)Design a circuit that will generate an even parity bit for 4 bit input and implement it using only NAND gates?

Q7)

(a) Explain the difference in operation of a monostable and astable

multivibrator?

(b) What is master slave JK flip flop / Explain its working?

Q8)Design a circuit that will function according tc state diagram given below:

Q9) (a) Implement the function

(b) ' F=ABC +ABC' +A'B'C' +AC' using PAL.

With help of neat diagram explain working of R-2R ladder type DAC.