Revision 2

Question 1

What are registers inside a computer processor?

Answer 1

Small strorage memory locations inside the processor that holds data being worked on

Question 2

What are the special registers inside a computer processor?

Answer 2

Status flags
memory address register
memory data register

Question 3

what is the instruction register?

Answer 3

stores instructions at the end of a fetch to be executed by the control unit

Question 4

what is the program counter?

Answer 4

stores the address of the memory location where the next instruction is stored

Question 5

what is the control unit?

Answer 5

controls components in order to execute instructions

Question 6

what does the arithmatic and logic unit do ?

Answer 6

preforms mathematical and logical operations

Question 7

what is the address decoder?

Answer 7

examines the full address and acitvates the appropriate chip by sending a chip select command (/CSx)

Question 8

what is the DMA controller ?

Answer 8

facilitates data transfer between I / O chips without involving the processors

Question 9

what does the interrupt controller?

Answer 9

classifies multiple concurrent urgent requests via hardcoded priority

Question 10

what does the interrupt service routine do?

Answer 10

handles read request from I / O devices