1. Input Devices – Allow users to send data and instructions into the computer.
2.
Processing
Unit (CPU) – The brain of the computer;
processes and executes instructions.
3.
Storage
Devices – Hold data temporarily or
permanently for later use.
4.
Output
Devices – Present the results of processed
data in a usable form.
Input Devices
- Keyboard – For typing text and commands.
- Mouse – For pointing, selecting, and navigating.
- Scanner – For converting physical documents into digital form.
- Microphone – For recording audio input.
- Camera/Webcam – For capturing images and videos.
- Touchscreen – Both input and output (interactive displays).
Output Devices
- Monitor/Screen – Displays text, graphics, and videos.
- Printer – Produces hard copies of digital files.
- Speakers/Headphones – Provide sound output.
- Projector – Enlarges display for group viewing.
Storage Devices
- Primary Storage
(Volatile/Temporary):
- RAM (Random Access Memory) – Stores data temporarily while the computer is in
use.
- Cache Memory – High-speed memory close to the CPU for faster
access.
- Secondary Storage
(Non-volatile/Permanent):
- Hard Disk Drive (HDD) – Magnetic storage for large amounts of data.
- Solid-State Drive (SSD) – Faster, durable storage using flash memory.
- Optical Discs (CDs, DVDs) – Store media and files.
- USB Flash Drives – Portable data storage.
- Memory Cards (SD cards, etc.) – Used in cameras, phones, and tablets.
- Cloud Storage (Google Drive,
OneDrive, etc.) – Online storage accessible
via the internet.
Summary:
- Input devices feed data to the computer.
- The CPU processes the data.
- Storage devices save data.
- Output devices display results.
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