1.1 system architecture

Question 1

What does the CU do and stand for

Answer 1

CU stands for control unit

manages data movement in the CPU

Question 2

What is a register

Answer 2

small fast memory on the CPU that stores one a single value

Question 3

what does the MAR store

Answer 3

memory address register stores

holds the addresses of data being fetched from memory

Question 4

what does the MDR store

Answer 4

memory data register

holds the data of the instruction to be read or written