MICROPROCESSORS AND INTERFACING - QUIZ 2

ISR Stands for

• Internet service router

• Internet Service Road

• Interrupt Service road

• Interrupt Service Routine

DMA stand for

• Direct memory access

• Direct management access

• Direct mobile access

• Direct memory application

what is the use of EI and DI instruction

• allows Interrupt & allows Interrupt

• allows Interrupt & blocks Interrupt

• blocks Interrupt & allows Interrupt

• blocks Interrupt & blocks Interrupt

Which of these are microprocessors

• 8085

• 8086

• Intel Core 2 Duo

• All of these

Companies which manufacture microprocessors are

• Intel

• Synopsys

• ARM

• AMD

What function which can stop the main program and do other programs?

• Interrupt

• Timer

• Counter

• SPI

3. The instruction “JUMP” belongs to

• a) sequential control flow instructions

• b) control transfer instructions

• c) branch instructions

• d) Arithmetic nstructions

The instruction that supports addition when carry exists is

• a.ADD

• b.ADC

• c.ADD & ADC

• d.none of the mentioned

The instruction that subtracts 1 from the contents of the specified register/memory location is

• a.INC

• b.SUBB

• c.SUB

• d.DEC

he flag that acts as Borrow flag in the instruction, SBB is

• a.direction flag

• b.carry flag

• c.parity flag

• d.trap flag