Basic Components of a Computer System
A computer system consists of hardware and software components that work together to perform tasks efficiently.
Known as the brain of the computer.
Performs arithmetic, logic, control, and input/output operations.
Main Parts:
ALU (Arithmetic Logic Unit): Performs calculations and logical operations.
CU (Control Unit): Directs the flow of data and instructions.
Registers: Temporary storage for quick data access.
Stores data and instructions for processing.
| Type | Description |
|---|---|
| RAM (Random Access Memory) | Volatile memory, stores data temporarily during execution. |
| ROM (Read-Only Memory) | Non-volatile memory, stores permanent instructions like BIOS. |
| Cache Memory | High-speed memory to store frequently used data. |
| Secondary Storage | Long-term storage: Hard drives, SSDs, optical disks, USB drives. |
Devices used to enter data into the computer.
Examples: Keyboard, Mouse, Scanner, Microphone, Webcam
Devices used to display or produce results from the computer.
Examples: Monitor, Printer, Speakers, Projector
Long-term storage of data and programs.
Examples: Hard Disk Drive (HDD), Solid State Drive (SSD), Optical Discs, USB Flash Drive
Main circuit board connecting CPU, memory, and peripherals.
Allows communication between all components.
Provides electric power to all computer components.
Converts AC to DC voltage as required by components.
System Software: Operating System (OS), manages hardware and software resources.
Application Software: Programs for user-specific tasks like Word processors, Browsers, Games.
CPU processes data, memory stores it temporarily, and storage devices save it permanently.
Input devices feed data, output devices display results.
Motherboard connects all hardware, while software makes the computer usable.
Take quizzes related to this topic and see where you stand!
Start Quiz Now