MCA-02
June Examination 2016
MCA Ist Year Examination
Digital Logic
Paper MCA-02
Time 3 Hours Max. Marks 80
Note: The question paper is divided into three sections B and C. Write answers as per given instructions.
Section A 8 × 2 16
(Very Short Answer Questions)
Note: Answer all questions. As per the nature of the question delimit your answer in one word, one sentence or maximum upto 30 words. Each question carries 2 marks.
What is use of fixed point representation?
What is statement of duality property?
What is full form of ASCII?
What is SRAM?
Write any two types of decimal to binary conversions?
What is the flow of BCD?
Write any two benefits of shift registers?
(viii) What is ROM?
130
MCA-02 100 3 (P.T.O.)
MCA-02 100 3 (Contd.)
130
Section B 4 × 8 32
(Short Answer Questions)
Note: Answer any four questions. Each answer should not
exceed 200 words. Each question carries 8 marks.
Discuss the basic 2-input Multiplexer.
How data distributors work?
Discuss decimal to BCD encoder.
Simplify the following Boolean expression:
F ABC
Discuss serial-in-parallel out register.
Describe T flip flop with suitable diagram and functionality.
Describe half subtractor and full subtractor with diagram and
truth tables.
Explain the universal gate property of NOR gate for XOR, OR
gate formation?
MCA-02 100 3
130
Section C 2 × 16 32
(Long Answer Questions)
Note: Answer any two questions. You have to delimit your each
answer maximum upto 500 words. Each question carries
16 marks.
10) Design a 4-bit Parallel-in-serial-out shift register with neat
sketch.
11) Explain the working and detailed classification of serial to
parallel converter.
12) Write a short note on:
Encoders
Applications of shift registers
13) Explain the working and basic structure of DRAM.