CS302 Midterm Solved MCQs by Waqar Siddhu

CS302 Midterm Solved McQs Papers By Waqar Sidhu

(File 1)

Q1. The range of Excess-8 code is from _______ to _______.

1. +8 to -7
2. +9 to -8
3. -9 to +8

Q2. The decimal “17” in BCD will be represented as _________.

1. 11101
2. 11011
3. 11110

Q3. The four outputs of two multiplexers, connected to from a 16,input multiplexer are connected together through a 4-input ______ gate.

1. AND
2. NAND
3. XOR

Q4. A standard interface for programming the ln-System PLD consists of _________.

1. 2-wire
2. 8-wire
3. 16-wire

Q5. ________ Dual, 4-input multiplexer can be connected to form a 16-input multiplexer.

1. 2
2. 3
3. 5

Q6. S-R latch can be implemented by using ________ gates.

1. NAND, NOR
2. NAND, XOR
3. NOT, XOR

Q7. A product term is 0 when _____________.

1. Any of the literals is 1
2. At least two literals are 1
3. All the literals are 1

Q8. What will be the output of a 3-input NAND gate for the input values: A=1, B=0, C=1

1. One
2. Undefined
3. No output, as input is invalid

Q9. ________ is not a valid hexadecimal number.

1. 1234
2. ABCD
3. 1001

Q10. 2’s complement of any binary number can be calculated by

1. Subtracting 1 from 1’s complement
2. Calculating 1’s complement and inverting Most significant bit Adding 1’s complement twice

Q11. A BCD to 7- Segment decoder has _____ inputs and _____ outputs.

1. 3, 7
2. 7, 3
3. 7, 4

Q12. Which of the following simplification method is intended to be used FOR Boolean expressions having more than four variables?

1. Boolean Algebra and rules
2. Karnaugh Map
3. Demorgan’s Theorem

Q13. In the following Karnaugh map, which group has “legal grouping”?

1. A
2. B
3. D

Q14. What are the values of sum and carry out when two 4-bit binary number (1011 and 1111) are applied to a 4-bit parallel adder and carry input is 1.

out 1 0111,C

out 1 1111,C

out 1 1011,C

out 1 1100,C

Q15. A particular half-adder has ______ inputs and _________ output(s)

1. 3, 1
2. 3, 2
3. 2, 1