Components of computer
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This document discusses the basic components and functions of a computer. It describes input devices like keyboards and mice that supply information to the central processing unit (CPU). The CPU, which is the computer's brain, then processes the input and sends the output to devices like monitors or printers. Memory units like RAM and ROM are also components that store information for the CPU. The document provides examples of different storage devices that hold files and data, like hard disk drives, CD-ROMs, and USB drives.
Components of computer
- 1. By : Keshavi Aggarwal Class: IX-C Roll No.: 17
- 2. INTRODUCTION ON COMPUTER COMPONENTS OF COMPUTER INPUT DEVICES PROCESSOR (CENTRAL PROCESSING UNIT) OUTPUT DEVICES STORAGE OR MEMORY UNIT
- 3. Now-a-days computer is playing a main role in everyday life as it has become the need of people just like television, telephone or other electronic device at home. Technically , a computer is a programmable machine. This means it can execute a programmed list of instructions and respond to new instructions that are given. Today the term is most often used to refer
- 4. INPUT DEVICES PROCESSOR (CENTRAL PROCESSING UNIT) OUTPUT DEVICES STORAGE OR MEMORY UNIT
- 5. The input is first given to the processor by input devices . These devices which supply the feed or information to the main machine , i.e. the CPU , for the beginning of the IPO cycle is called an input devices . Some input devices are: Keyboard Mouse Scanner Digital camera Microphone Tablet Light pen Joystick 3
- 6. After the input is received , it goes to the processing unit . The central processing unit is called CPU , processer or microprocessor. It is also known as brain of the computer. The CPU is the device that receives various types of input and produces output. The CPU has 3 major parts. They are: control unit(CU), Arithmetic and Logic unit(ALU), and Memory unit(MU).
- 7. The various parts of the computer’s CPU is directed by control unit. The control unit can be described as the manager of the CPU. It’s sole purpose is to guide other mechanisms in the system to complete specific tasks. The control unit fetches instructions from memory and decodes them to produce signals which controls the other parts of the computer. These signals cause it to transfer data between memory and ALU to activate peripherals to perform input or output.
- 8. Ii is one of the most important part of computer’s CPU . It comprise of electronic circuits that make it capable of executing arithmetic and logic operations. It has a ability to perform 4 types of functions: addition, subtraction, multiplication and division. It can also perform 3 logical operations: equal-to, less- then and greater-then. 3
- 9. It is a part of the computer in which information is stored for the central processing unit. A computer consists of two types of memory: RAM and ROM. 3 RAM ROM It stands for Random Access Memory. It stands for Read Only Memory. It can be edited. It can only be viewed it cannot be edited.
- 10. After the processing is done , the result is finally displayed on the output device. The devices which puts the result of the input given by the user after the processing is done is called as output device. It is also a device which communicates the result of data processing. Some output devices are: Monitor Printer Speaker 3
- 11. Storage devices are use to hold information. Different storage devices are: 1. Hard disc drive: the place where the files are permanently stored. The operating system is installed here. 2. CD-ROM drive: these are use to store large amount of data. 3
- 12. 3.Floppy drive: it is a small disc storage device which has 1.4 megabytes of capacity 4. DVD drives: it stores a large amount of data, which is much more than the capacity of CD. 5. Memory stick/ pen drives: they are small in size but can hold a good 3
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