Bihar Beltron DEO Syllabus 2024 Data Entry Operator
Name –Saroj Kumar
Whatapps- 9955979088
[email protected]
Basics of Computer
Computer Organization
A computer is a device that processes information. It consists of hardware and
software components. The hardware components include:
Input devices: These devices allow us to enter data into the computer, such
as keyboards, mice, scanners, and microphones.
Output devices: These devices display or present the processed data, such
as monitors, printers, and speakers.
Central Processing Unit (CPU): This is the brain of the computer. It
performs calculations and controls the flow of data.
Memory: This stores data and instructions. It is divided into primary
memory (RAM and ROM) and secondary memory (Hard drives, SSDs, and
USB drives).
Motherboard: This connects all the components of the computer.
Input and Output Devices
Input Devices:
Keyboard: Used to enter text and commands.
Mouse: Used to point and click on objects on the screen.
Scanner: Used to convert physical documents into digital images.
Microphone: Used to record sound.
Webcam: Used to capture video.
Output Devices:
Monitor: Displays visual output.
Printer: Produces physical copies of documents.