MICROPROCESSOR QUIZ

If the sign bit of mantissa is 0 and the exponent is increased from a positive to a more negative number the result is

A negative floating point number

Either A or B depending on the actual number

A smaller floating point number

A larger floating point number

TRUE ANSWER : ?
YOUR ANSWER : ?

An 8-bit microprocessor can have ………….. address lines.

16

32

8

cannot be predicted

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following is not correct?

An interrupt signal is required at the start of every program

Bootstrap is a technique or device for loading first instruction

An instruction is a set of bits that defines a computer operation

Bus is a group of wires

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following instruction will never affect the zero flag?

ORA R

XRA R

DCX Rp

DCR R

TRUE ANSWER : ?
YOUR ANSWER : ?

Let the content of register C be 00000000 before the instruction DCR C is executed. The content of register C after the after the execution of this instruction will be

None

11111111

00000001

00000000

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following ICs is used to interface keyboard and display?

8279

8253

8259

8251

TRUE ANSWER : ?
YOUR ANSWER : ?

An e-mail message can be sent to many recipients.

True

False

TRUE ANSWER : ?
YOUR ANSWER : ?

Because we wish to allow each ASCII code to occupy one location in memory, most memories are __________ addressable.

WORD (16 bits)

NIBBLE

BYTE

DOUBLEWORD (32 bits)

TRUE ANSWER : ?
YOUR ANSWER : ?

In 8085, the pins for SID and SOD are

4 and 5 respectively

5 and 4 respectively

3 and 4 respectively

4 and 3 respectively

TRUE ANSWER : ?
YOUR ANSWER : ?

The instruction set of a microprocessor

cannot be changed by the user

is specified by the user

is specified by the manufacturers

is stored inside the microprocessor

TRUE ANSWER : ?
YOUR ANSWER : ?