ISCET Digital Electronics Principles 2

Question 1

What is the output of a NAND gate when both inputs are HIGH?

Accepted Answer

LOW

Answer

HIGH

Answer

Undefined

Answer

Tri-state

Question 2

Which number system uses base 16 with digits 0–9 and letters A–F?

Accepted Answer

Hexadecimal

Answer

Octal

Answer

Binary

Answer

BCD

Question 3

In a D flip-flop, what happens to the output Q on the active clock edge when D = 0?

Accepted Answer

Q becomes 0

Answer

Q toggles

Answer

Q becomes 1

Answer

Q retains its previous value

Question 4

What Boolean expression represents a 2-input XOR gate?

Accepted Answer

A⊕B = A'B + AB'

Answer

A·B

Answer

A+B

Answer

A'B'

Question 5

How many bits are required to uniquely represent 32 different states?

Accepted Answer

5

Answer

4

Answer

6

Answer

8

Question 6

Which logic family is characterized by very low power consumption and high noise immunity, making it dominant in modern ICs?

Accepted Answer

CMOS

Answer

TTL

Answer

ECL

Answer

RTL

Question 7

What is the decimal equivalent of the binary number 1011₂?

Accepted Answer

11

Answer

9

Answer

10

Answer

13