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(CUCBCSS—UG)
~ Computer Science
ee BCS 3B 04—FUNDAMENTALS OF DIGITAL ELECTRONICS

Part A

Answer all the questions.
Each question carries 1 mark.

What is nibble ?

Define base of a number system.
What is the Gray code for the decimal number 6 ?

How many AND gates are required to realize Y = CD + EF + G.

For JK flip-flop with J = 1 and K = 0, the output after clock pulse will be —————?
On K map grouping of 0’s produces

expression.

A device which convert BCD to seven segment is

How many select lines will a 16 to 1 multiplexer will have ?
A full adder is characterized by

How many address bits are required to represent a 32 K memory ?

inputs and ————— outputs.

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Answer all the questions.
Each question carries 2 marks.

Design an exclusive OR gate with three inputs.

What are synchronous counters ?

What are excess-3 codes ?

What is a shift register ? Can a shift register be used as a counter ?
Prove that xy + xz’ + yz = xy +x’z.

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THIRD SEMESTER B.Sc. DEGREE EXAMINATION, NOVEMBER 2016

' Maximum : 80 Marks

10 marks)

10 marks)

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