1. ©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE Computer Technology Central Processor Unit http://upload.wikimedia.org/wikipedia/commons/0/02/80486dx2-large.jpg

2. ©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE Central Processing Unit (CPU) The basic CPU is composed of five different elements Each element was designed with Gates Each Gate was made with transistors

3. ©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE Simple Central Processing Unit The five basic CPU elements are: ◦ Instruction fetcher ◦ Instruction decoder ◦ Registers ◦ Arithmetic Logic Unit ◦ Memory Unit

4. ©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE Instruction fetcher Picks up the next instruction for the CPU

5. ©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE Instruction decoder Implements the instruction by controlling the other hardware.

6. ©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE Registers Short term memory Holds data for processes, like adding two numbers.

7. ©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE Arithmetic Logic Unit Performs arithmetic functions: ◦ Addition, subtraction, multiplication ◦ Logic functions like AND and OR

8. ©2010 Akula LLC, Jeremy R. Hertzberg, BS CMPE Memory Unit Handles fetching and storing of data