4

Question 1

PIC stands for?

Answer 1

Programmable interrupt control.

Question 2

PIC has —- inputs signals and —- output signal/s.

Answer 2

eight, one

Question 3

PIC is and example of ——?

Answer 3

Peripheral devices system.
For communicating with peripheral devices processor used I/O ports.

Question 4

There are only two operations with external world possible?

Answer 4

1- Read
2- Write

Question 5

The IN and OUT instructions have a —– form and a —– form, but the —- form is almost always used.

Answer 5

byte, word , byte

Question 6

PIC has —- ports?

Answer 6

two ports
1- 20
2- 21

Question 7

Port 20 is —- while port 21 is the ——.

Answer 7

Control port. interrupt mask register
They can be used for selectively enabling or disabling interrupts.

Question 8

Each of the bits at port —- corresponds to one of the —- lines.

Answer 8

21, IRQ

Question 9

The three flags are not used for mathematical operations are —-?

Answer 9

1- Direction flag
2- Interrupt flag
3- Trap flag

Question 10

If the —– flag is set, after every instruction a —– will be automatically generated.

Answer 10

interrupt, type 1 interrupt