Ex-OR and Ex-NOR Gates MCQs

Question 1

An OR gate with inverted inputs functions as:

Accepted Answer

a NAND gate.

Answer

an AND gate.

Answer

a NOR gate.

Answer

an inverter.

Question 2

The special software application that translates from HDL into a grid of 1's and 0's, which can be loaded into a PLD, is called a:

Accepted Answer

compiler.

Answer

formatter.

Answer

programmable wiring.

Answer

CPU.

Question 3

A half-adder does not have ________.

Accepted Answer

carry in

Answer

carry out

Answer

two inputs

Answer

all of the above

Question 4

________ is a correct combination for an ODD-parity data transmission system.

Accepted Answer

data = 1101 1011 parity = 1

Answer

data = 1101 0010 parity = 0

Answer

data = 0001 0101 parity = 1

Answer

data = 1010 1111 parity = 0

Question 5

A circuit that can convert one of ten numerical keys pressed on a keyboard to BCD is a ________.

Accepted Answer

priority encoder

Answer

decoder

Answer

multiplexer

Answer

demultiplexer

Question 6

The ________ prefix on IC's indicates a broader operating temperature range, and the devices are generally used by the military.

Accepted Answer

54

Answer

2N

Answer

74

Answer

TTL

Question 7

When an open occurs on the input of a TTL device, the output will ________.

Accepted Answer

react as if the open input were a HIGH

Answer

go LOW, because there is no current in an open circuit

Answer

go HIGH, since full voltage appears across an open

Answer

still be good, if only the good inputs are used

Question 8

The largest truth table that can be implemented directly with an 8-line-to-1-line MUX has ________.

Accepted Answer

8 rows

Answer

3 rows

Answer

4 rows

Answer

16 rows

Question 9

Parity generation and checking is used to detect ________.

Accepted Answer

errors in binary data transmission

Answer

which of two numbers is greater

Answer

errors in arithmetic in computers

Answer

when a binary counter counts incorrectly