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CPU and its components
This document provides an overview of computer components and their functions. It discusses the central processing unit (CPU) which contains the arithmetic logic unit, control unit, and memory unit. The CPU is located on a microprocessor chip in the system unit. Storage devices like hard disks, CD drives, and DVD drives are attached to the CPU and housed inside or outside the computer. A USB port connected to the CPU allows input/output devices and USB drives to interface with the computer.
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CPU and its components
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- 3. • Chapter 1Reviewing 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
- 8. CPU is housedon a single chip called microprocessor. It is located in system unit.
- 10. • The CPUhas three components . 1. ALU(Arithmetic Logic Unit): Performs all arithmetical calculations such as addition and multiplication & makes all logical decisions. 2. CU(Control Unit): Directs different parts of the computer to carry out instructions. It controls communication and coordination between input/output devices. 3. MU(Memory Unit): Stores data & instructions to process data
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- 13. • Attached tothe CPU. • They are storage devices. • They are housed within the computer or in an external box.
- 16. • Made upof several disks. • The disks are sealed in an airtight case to protect it from dust. • Each disk store data.
- 18. • It enablesus to create CD-ROMs and audio CDs. • We can copy and save data on CDs.
- 20. • It isused to save and read data on DVDs. • We can store large amounts of data such as films on DVDs.
- 22. • USB portis a part of system unit and is linked to CPU. • We can attach input/output devices and USB flash drive to the USB port.