Module 1: Introduction

Question 1

CPU (Central Processing Unit)

Answer 1

the “overworked clerk” performs simple tasks
add/sub/mult/div
task to perform = instruction

Question 2

Memory

Answer 2

clerk’s “desk drawers”

Each drawer has a number, also known as an address

Question 3

Program Memory

Answer 3

contains instructions for clerk

tells clerk what to do

Question 4

Data Memory

Answer 4

contains data for clerk to work on

Question 5

Program Counter (PC)

Answer 5

tells the clerk which program memory drawer to open up and execute

Question 6

Basic Operations of a CPU

Answer 6

PC tells clerk what drawer to open (fetching)
Clerk examines the instruction and performs (decoding and execution)
Stores result of instruction in data memory drawer (optional)
Updates the PC
Repeats process until instructions are complete (instructions = program)

Question 7

4 basic parts of a CPU

Answer 7

ALU
PC
Memory for data
Memory for instruction