Wednesday, September 7, 2016
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
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
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?
(a) Explain the difference in operation of a monostable and astable
(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.
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