Diploma in Information Technology | Introduction to Computer | Basic Computer Knowledge

Introduction To Computer

A computer is a machine or device that performs processes, calculations and operations based on instructions provided by a software or hardware program.

Basic Components of Computer:

There are 4 Basic Parts of Computer

1.Personal Computer: 

It is main part of Computer which is consist of several parts list given below: 

i). Motherboard
ii). Power Supply
iii). CPU
iv). Hard Disk Drive
v). DVD/CD Drive
vi).RAM
vii). FAN, etc. 
Each of these parts have its own function. 

I). Motherboard: 

is considered as mother of Computer PC without its there is no existence of PC, and CPU is considered as Heart of PC with Heart There is no value of life. 

II). Power Supply:

is power house for PC which deliver power to different component bypass from Motherboard but few components get power directly these components are: Hard Disk Drive, CD/DVD Drive, Floppy Disk Drive. 

III). RAM stands for (Random Access Memory):

It is very essential part for each and every machine which has motherboard it work like Police, As Police kept the theft in prison till no bell or hanging order passed from the court.
ROM stands for (Read Only Memory)

2.Monitor/LCD:
3.Keyboard:
4.Mouse:

Other Components of Computer:

1.Printer/ Plotter/ Scanner
2.Joysticks
3.Speaker/ headphones/ Microphones
4.Web Camera
5.Bluetooth/ Wi-Fi Devices, etc.

Types of Input Devices:

Input Device is a device which feed/modify data into computer with the help of user interface. There are few examples given below:

1.Keyboard:

Keyboard is a input device which is used to input data inside computer by depressing the keys. When any user of any specific region or any country has change keyboard language with their own native language it will change the keyboard language which is Qwerty Keyboard US language to Native language of Users.

Usually All Qwerty Keyboards Have English Language Alphabets and Numeric Button Pad, Arrow / Direction Keys, Function Keys and Symbols Button.

2.Mouse

Mouse is widely usable input device which is very necessary device to operate any computer. In Laptops There is no need of mouse because laptop has mouse pads which works same as like as a mouse has a cursor to pick, drag and drop icons and click on them. There are two types of mouse which are existed in world. 

1. Wired Mouse: These Mouse are connected with wire that's why are so called wired mouse.

2. Wireless Mouse: These Mouse have no wire connectivity these mouse has a Transmitter and a Reciever.  

3.Joystick
4.Web Camera
5.Scanner
6.Microphone


Types of Output Devices:
Output Devices are those device which can output users data in either soft or hard copy
There are few examples given below 
1.Printer/Plotter
2.Monitor/LCD/LED/Projector

Types of Memory Devices:
There are two types of memory devices in computer
1.RAM (Random Access Memory)
2.ROM (Read Only Memory)

Types of Storage Devices:

Storage Device are those Devices which can be used to store user data.

1.Hard Disk Drive ( include SATA,IDE,SSD)

2.CD/DVD/Blue Ray Disc

3.USB

4.Memory Card

5.Cassette/Floppy Disc