CPU and its components

cpu, its components and disk drives

1. COMPUTER WHIZ 4

2. Whiz’s File Chapter 1 Reviewing computers Chapter 2 Pioneers of Computers Chapter 3 About the CPU Chapter 4 Storing Data Chapter 5 Whiz through Software Chapter 6 Introducing Spreadsheet Chapter 7 Programming Languages Chapter 8 More on Multimedia Chapter 9 Computer Networks

3. Chapter 3 About the CPU

4. Contents I ntroduction to CPU components of CPU ALU CU Mu D isk dives H ard disk drive CD drive DVD drive USB port

5. Introduction to CPU

6. Brain of Computer The Central Processing Unit is the brain of the computer. It control and process all the information in the computer.

7. CPU is housed on a single chip called microprocessor. It is located in system unit.

8. CPU Fan

9. Components of CPU The CPU has three components . ALU(Arithmetic Logic Unit): Performs all arithmetical calculations such as addition and multiplication & makes all logical decisions. CU(Control Unit): Directs different parts of the computer to carry out instructions. It controls communication and coordination between input/output devices. MU(Memory Unit): Stores data & instructions to process data

10. Components of CPU

11. DISK DRIVES

12. Attached to the CPU. They are storage devices. They are housed within the computer or in an external box.

13. Hard disk drive (HDD) Made up of several disks. The disks are sealed in an airtight case to protect it from dust. Each disk store data.

14. CD d rive It enables us to create CD-ROMs and audio CDs. We can copy and save data on CDs.

15. DVD drive It is used to save and read data on DVDs. We can store large amounts of data such as films on DVDs.

16. USB port USB port is a part of system unit and is linked to CPU. We can attach input/output devices and USB flash drive to the USB port.