1.1 Systems Architecture

Question 1

accumulator

Answer 1

holds result of a calculation from the ALU

Question 2

memory address register (MAR)

Answer 2

holds the address of where data is to be fetched or stored

Question 3

memory data register (MDR)

Answer 3

holds the data fetched from or to be written to memory

Question 4

clock speed

Answer 4

how fast a computer can fetch instructions

Question 5

What is clock speed measured in?

Answer 5

hertz (Hz) and Gigahertz (GHz)

Question 6

Cache

Answer 6

primary storage closer to the CPU then the RAM

Question 7

embedded computer system

Answer 7

devices created for a specific purpose

Question 8

general purpose device

Answer 8

device with multiple functions

Question 9

Program counter (PC)

Answer 9

Holds the address of the next instruction

Question 10

Accumulator (ACC)

Answer 10

Holds the results of calculations

Question 11

Arithmetic logic unit (ALU)

Answer 11

performs calculations

Question 11

Cache size

Answer 11

how much primary data can be stored

Question 12

factors that impact the CPU

Answer 12

the number of cores, clock speed and the amount of cache