Friday, January 20, 2023

Dr. A.P.J. Abdul Kalam University BCA III SEM Digital Computer Electronics [BCA303T] Dec 2020 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Computer Application

Third Semester Main Examination, Dec-2020

Digital Computer Electronics [BCA303T]

Time: 3:00 Hrs Max Marks 50

Note : Attempt all questions. All questions carry equal marks.

Q.1 Explain with examples 1's and 2's complement method.

Write short note on-

(iv) Binary number system

(v) Hexadecimal number system

Q.2 Explain De-Morgan's theorem.

Define half adder and full adder.

Q.3 (i) What do you mean by K-map?

(ii) Construct a truth table for OR gate.

(i) Explain min-term and max-term.

(ii) Write a Short note on "SOP"

Q.4 Explain with diagram- (any three)

(i) Multiplexer

(ii) De multiplexer

(iii) Encoder

(iv) Decoder

(v) Circuit

Q.5 What are counters? Explain synchronous counters.

Explain flip- flop briefly explain J-K flip-flop

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