CS302 Midterm Past Papers by VU Topper RM

Q1. Vu-Topper RM (1 marks)

Combinational Logic is used for combinational circuits, where as Registered Logic is based on ------circuits.

Sequential circuits 192

Q2. Vu-Topper RM (1 marks)

A standard interface for programming the In-System PLD consists of

4-wire 194

Q3. Vu-Topper RM (1 marks)

The 4-bit ALU (74XX381) only has three function select inputs allowing only ____ different arithmetic and logic functions.

Q4. Vu-Topper RM (1 marks)

Which of the following is the MSI version of the Look-Ahead Carry Generator, which provides identical inputs and outputs except for the C4 output?

74XX182 151

Q5. Vu-Topper RM (1 marks)

The PROM consists of a fixed non-programmable ____________ Gate array configured as a decoder.

AND 182

Q6. Vu-Topper RM (1 marks)

Each Octal Number digit can represent a _________ Binary Number

3-bit 31

Q7. Vu-Topper RM (1 marks)

The simplified expressions using either of the two K-maps are-----?

Identical 89

Q8. Vu-Topper RM (1 marks)

The _____ gate and ____ gate implementation connected at the B input of the 4bit Adder

AND and OR 146

Q9. Vu-Topper RM (1 marks)

In 16-Input Multiplexer, the four outputs are connected together through a 4-input ____ gate.?

OR 171

Q10. Vu-Topper RM (1 marks)

________ is invalid number of cells in a single group formed by the adjacent cells in K-map

12 G

Q11. Vu-Topper RM (1 marks)

XOR is an abbreviation of___________.

Exclusively-OR G

Q12. Vu-Topper RM (1 marks)

For a 3-to-8 decoder how many 2-to-4 decoders will be required?

Decoders G

Q13. Vu-Topper RM (1 marks)

The expression F=A.B.C describes the operation of three bits _____ Gate.

0R G

Q14. Vu-Topper RM (1 marks)

How many sets of AND-OR based circuit are used to allow complemented and un-complemented B input to be applied at the B inputs of the two 4-bit Adders?

Tw0 146

Q15. Vu-Topper RM (1 marks)

The product terms in Standard SOP are called________ Minterms 85

Q16. Vu-Topper RM (1 marks)

“The complement of a product of variables is equal to the sum of the complements of the variables.” is known as:

Demorgan’s First Theorem 74

Q17. Vu-Topper RM (1 marks)

Basic function of a Comparator is to _________ two binary quantities. Compare 153

Q18. Vu-Topper RM (1 marks)

The _____ output has the output of the OR gate connected through an XOR gate to the tri-state buffer.

Programmed Polarity 186

Q19. Vu-Topper RM (1 marks)

Power consumption in TTL is___________ as compared to CMOS.

Higher than 61

Q20. Vu-Topper RM (1 marks)

enable input of the decoder when set to 1 disables the decoder and the multiplexers.

G 171

Q21. Vu-Topper RM (1 marks)

A Karnaugh Map is organized in the form of a(an)_______.

Array 89

Q22. Vu-Topper RM (1 marks)

Gate is used in circuits to generate the 1’s Complement of a number by inverting all its bits.

NOT 44

Q23. Vu-Topper RM (1 marks)

The OR Gate performs a Boolean________function

Addition

Subtraction

Q24. Vu-Topper RM (1 marks)

The expression F=A+B+C OR AND

Q25. Vu-Topper RM (1 marks)

In Caveman number system the value “2” is represented by symbol ______ > 11

Q26. Vu-Topper RM (1 marks)

A SOP expression having a domain of 3 variables will have a truth table having _____ combinations of inputs and corresponding output values.

Q27. Vu-Topper RM (1 marks)

A standard SOP form has ________terms that have all the variables in the domain of the expression. Sum

Product

Q28. Vu-Topper RM (1 marks)

Caveman number system is Base________number