MICROPROCESSOR QUIZ

Total number of instructions in 8085 microprocessor assembly language is

246

244

245

247

TRUE ANSWER : ?
YOUR ANSWER : ?

Using DeMorgan’s Theorem we can convert any AND-OR structure into

OR-NAND

NAND-NAND

NOR-NAND

NAND-NOR

TRUE ANSWER : ?
YOUR ANSWER : ?

The data lines of 8085 microprocessor are multiplexed with

status lines

None of these

lower order address lines

higher order address lines

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following instruction is not possible in 8085?

POP B

POP D

POP PSW

POP 30 H

TRUE ANSWER : ?
YOUR ANSWER : ?

Which general register or general register pair is incremented/decremented by 2 during PUSH and POP instructions?

Program Counter.

Stack Pointer.

D-E.

H-L.

TRUE ANSWER : ?
YOUR ANSWER : ?

During which T-state, contents of OP code from memory are loaded into IR (Instruction Register)?

T3 OP code fetch

T4 OP code fetch

T1 OP code fetch

T2 OP code fetch

TRUE ANSWER : ?
YOUR ANSWER : ?

A mask programmed ROM is

erasable electrically

erasable and programmable

programmed at the time of fabrication

programmed by the user

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one of the following is not correct?

Bus is a group of wires

Bootstrap is a technique or device for loading first instruction

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

An interrupt signal is required at the start of every program

TRUE ANSWER : ?
YOUR ANSWER : ?

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

always reset

affected indicating specific conditions

not affected

always set

TRUE ANSWER : ?
YOUR ANSWER : ?

The number of hardware interrupts present in 8085 microprocessor are

16

8

5

10

TRUE ANSWER : ?
YOUR ANSWER : ?