DIGITAL ELECTRONICS
1. What is called the logical product of two or more logical sum terms?
a) SOP
b) POS
c) OR operation
d) NAND operation
2. State the expression for Absorption law.
a) A + AB = A
b) A + AB = B
c) AB + AA’ = A
d) A + B = B + A
3. Find the reduced form of the boolean function A + BC.
a) AB + BC
b) (A + B)(A + C)
c) A’B + AB’C
d) (A + C)B
4. Identify the canonical sum of product form of the function y(A,B) = A + B.
a) AB + BB + A’A
b) AB + AB’ + A’B
c) BA + BA’ + A’B’
d) AB’ + A’B + A’B’
5. How many cells are there in a 4-variable K-map.
a) 12
b) 16
c) 18
d) 4
6. The code where all successive numbers differ from their preceding number
by single bit is __________
a) Alphanumeric Code
b) BCD
c) Excess 3
d) Gray
7. How many truth table entries are necessary for a Three -input circuit?
a) 4
b) 16
c) 8
d) 2
8. Choose the binary equivalent of the decimal number 16.
a) 10000
b) 11001
c) 1111
d) 101010
