Basic Computer Concepts

Basic Computer Concepts & Architecture

What is Computer Awareness?

Computer Awareness is defined as “Knowing how Computers work and Operate”. It generally refers to knowledge and ability of using computers and related technology.

What is Computer?

A Computer is an electronic device which is designed to accept data from user, process that data and provide results back to user. It performs both arithmetic & logical operations.

Hardware: The Actual Machinery that is physical components like wires, transistors, circuits etc is hardware.

Software: The Instructions & Data are called Software

Basic Hardware Computers:

Input Device: Usually a keyboard and a mouse. Through Input Devices we provide input i.e data and instructions to computer

Output Device: Usually a Display screen, printer or other devices which lets you see the results that computer generates

Memory: It enables a Computer to storage data and programs.

Mass Storage Devices: It allows a computer to store large volumes of data. Common Mass storage devices are Disk Drives & Tape Drives

Central Processing Unit or CPU: CPU is the heart or brain of the computer. It is the component which performs actual operations & executes the operations.

List of Input Devices:

  • Mouse
  • Keyboard
  • Scanner
  • Digital Camera
  • Web Camera
  • Joystick
  • Track Ball
  • Touch Pad
  • Light Pen
  • Bar Code Reader
  • Microphone
  • Graphics Tablet
  • Magnetic Ink Character Reader
  • Optical Mark Reader
  • Magnetic Card Reader
  • Biometric Devices
  • Bluetooth

List of Output Devices:

  • Monitor
  • Printer
  • Projector
  • Plotter
  • Speaker

List of Devices that act as Input as well as Output Devices:

  • Digital Camera
  • Web Camera
  • CD/ DVD
  • Fax
  • Modem
  • Touch Screen
  • Pen Drive

List of Storage/ Memory Devices

Primary Memory (Main Memory)

  • RAM (Random Access Memory)
  • ROM (Read Only Memory

Secondary Memory (Storage Devices)

  • Hard Disk
  • Optical Disk like CD-R, DVD-R, CD-RW, DVD-RW
  • Pen Drive
  • Zip Drive
  • Floppy Disk
  • External Hard Disk
  • Memory Cards

List of Internal Components of Computer

  • Mother Board
  • CMOS Battery
  • Expansion Slots
  • Network Card
  • Graphics Card
  • Cooling Fan
  • Memory Slots
  • Power Supply Unit

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