Digital Circuit and Microprocessor MCQs

Question 1

Whick of the following statement uc regarding S-R flip-flop is wrong?

Accepted Answer

it is anon-volatile memory

Answer

it consists of two cross-connected NOR gates

Answer

it forms the basis of more sophisticated memory element known as master-slave flip-flop

Answer

itt belgngs to the family of static memories

Question 2

The latest microprocessor 80486 having 1.2 million transistors was released in the market in 1989 by

Accepted Answer

Intel corporation

Answer

PCS Data Products

Answer

Compac Computer Corp.

Answer

Tata Honeywell

Question 3

The hot new chip recently released by Motorola is

Accepted Answer

68040

Answer

88000

Answer

80386

Answer

68030

Question 4

A 2 x 8 RAM stores

Accepted Answer

two eight-bit data words

Answer

eight two-bit data words

Answer

sixteen one-bit data words

Answer

none of the above

Question 5

A memory address is usually

Accepted Answer

a binary number a hexadecimal number

Answer

decimal number

Answer

(e) entered serially

Question 6

The contents of which memory degrade with every read operation?

Accepted Answer

EAROM

Answer

PROM

Answer

EPROM

Answer

all of the above can be erased by

Question 7

EPROM contents exposing it to

Accepted Answer

ultra-violet light

Answer

infra-red rays

Answer

burst of microwaves

Answer

intense heat radiations

Question 8

The largest computers commonly word size of? bits

Accepted Answer

64

Answer

8

Answer

16

Answer

32

Question 9

For providing the same total amount of read/write memory of 4096 bits, which will cost the least?

Accepted Answer

4096 x 1-bit RAM

Answer

512 x 8-bit RAM

Answer

1024 x 4-bit RAM

Answer

both (a) and (c)