Digital Circuit and Microprocessor MCQs

Question 1

A floating point number consists of

Accepted Answer

all of the above

Answer

a mantissa only

Answer

base only

Answer

an exponent only

Question 2

With reference to computer hardware, 'status flag' means

Accepted Answer

a binary digit logic gate of a CPU which automatically sets or resets to reflect the result of ALU operations

Answer

national flag of the manufacturing country

Answer

the same thing as buffer register

Answer

a unit for performing multibyte arithmetic

Question 3

The sequence of five binary codes within the control unit of a microcomputer which triggers appropriate control signal is called

Accepted Answer

microprogram

Answer

microinstruction

Answer

microprocessor

Answer

macrologic

Question 4

A 'data bus' refers to

Accepted Answer

data lines of a system bus in a microcomputer

Answer

latest commuter bus introduced by Delhi Transport Undertaking

Answer

a device for collecting and storing different data in a microprocessor

Answer

none of the above

Question 5

In computer parlance, 'handshaking' means

Accepted Answer

controlling information exchange via 1/0 ports between microcomputer and external logic

Answer

checking the status register

Answer

data transmission by external logic to I/O ports

Answer

reading of I/O port data by a microprocessor

Question 6

Regarding serial data interpretation in a microprocessor, NRZI stands for

Accepted Answer

non-return-to-zero invert

Answer

no-return-to-zero interpretation

Answer

non-return-to-zero interface

Answer

non-restoring-zero-invert

Question 7

The binary addition 1 +1+1 gives

Accepted Answer

11

Answer

111

Answer

10

Answer

110

Question 8

The result of binary multiplication 1112 x 102 is

Accepted Answer

1110

Answer

1101

Answer

110

Answer

1001

Question 9

The binary division 110002+ 1002 gives

Accepted Answer

110

Answer

1100

Answer

11

Answer

101