1.1 Lesson 2 The CPU & von Neumann

To Fetch, Decode and Execute Instructions (in MEMORY).

To perform calculations.

To render graphics on a screen.

To manage the computer system.

ALU

CU

Registers

Cache MEmory

BIOS

Accumulator

ALU

Program Counter

Memory Address Register

Control Bus Register

Fetches the data/instructions, decodes it and sends the signals via buses to the hardware components.

Carries out calculations and comparisons, to see if one value is larger than another.