Posted Date: 17 May 2018      Posted By:: Vijay Kumar Vishwakarma    Member Level: Gold  Points: 3 (Rs. 4)

# 2017 Deemed University B.Tech Computer Science and Engineering B.TECH. CS IIIrd Semester Sessional Examination, AUGUST 2017 Subject Name: DIGITAL ELECTRONICS Question paper

 Course: B.Tech Computer Science and Engineering University/board: Deemed University

Old paper for B.TEch(CS) for the subject Digital Electronics in AKS University, SAtna

B.TECH. CS IIIrd Semester Sessional Examination, AUGUST 2017
Subject Name: DIGITAL ELECTRONICS
Duration: 1:30 hr. Max Marks: 50
Section A
(Short Answer Type) 5 questions of 10 marks each (any 3) 30
1. Convert (DEAF)16 into decimal, octal, 4-bit (nibble) and binary number system.
2. Convert (7532)8 into decimal, hexadecimal, 4-bit (nibble) and binary number system.
3. Convert (786)10 into hexadecimal, octal, 4-bit (nibble) and binary number system.
4. Convert (1010101100)2 into decimal, octal, 4-bit (nibble) and binary number system.
5. Simplify/minimize using k-map;
a. F=? m (1, 2, 3, 5, 7, 9, 11, 13, 15)
b. F=? m (2, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15)
Section B
(Long Answer Type) 2 questions of 20 marks each (any 1) 20
1. Explain full adder with proper truth table, expression and logic circuit.
2. Explain full subtractor with proper truth table, expression and logic circuit.
3. Simplify/minimize using Boolean algebra;
F= abcd+a'bcd+ab'cd+abc'd+abcd'+abc+a'bc+ab'c+abc'+ab'+bc'+a

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