MICROPROCESSOR QUIZ

An I/O processor controls the flow of information between

Two I/O devices

Cache and main memory

Cache memory and I/O devices

Main memory and I/O devices

TRUE ANSWER : ?
YOUR ANSWER : ?

After RESET 8255 will be in

unchanged condition

mode 0; all ports are input

mode 0; all ports are output

mode 2

TRUE ANSWER : ?
YOUR ANSWER : ?

Identify the non-programmable interfacing device from the following

8295.

8255.

8257.

8212.

TRUE ANSWER : ?
YOUR ANSWER : ?

The word size of 8085 microprocessor is

8-bit

16-bit

20-bit

4-bit

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following conditions is not allowed in an RS latch?

R is negated, S is asserted

R is asserted, S is negated

R is negated, S is negated

R is asserted, S is asserted

TRUE ANSWER : ?
YOUR ANSWER : ?

When any data transfer instruction, to transfer the data from memory to microprocessor, is executed the condition flags are

always set

affected indicating specific conditions

always reset

not affected

TRUE ANSWER : ?
YOUR ANSWER : ?

Length of the instruction POP D is

4 byte

1 byte

3 byte

2 byte

TRUE ANSWER : ?
YOUR ANSWER : ?

FPGA means

Forward Parallel Gate Array

Forward Programmable Gate Array

Field Parallel Gate Array

Field Programmable Gate Array

TRUE ANSWER : ?
YOUR ANSWER : ?

Assertion (A): Negative values of incremental operator in DO loop are allowed in Fortran 77 but not in earlier versions of Fortran. Reason (R): Fortran 77 has better array facilities than earlier versions of Fortran.

Both A and R are correct and R is correct explanation of A

A is wrong R is correct

A is correct R is wrong

Both A and R are correct but R is not correct explanation of A

TRUE ANSWER : ?
YOUR ANSWER : ?

________is the only non-vectored interrupt in 8085 microprocessor.

RST 5.5

TRAP

RST 7

INTR

TRUE ANSWER : ?
YOUR ANSWER : ?

↑