Computer hardware is divided into four main categories: input devices used to enter data like gesture and voice recognition; output devices to display results such as screens and projectors; storage devices to save user data including hard drives and solid state drives; and communication devices that connect computers together using technologies like WiFi, modems and switches.

1. Computer Hardware
By: Abdul Basit

2. Computer hardware is mainly divided into four
categories
1 Input devices
2 Output devices
3 Storage devices
4 Communication devices

3. Input Devices are used to enter data
into the computer.

4. Gesture input
RFID
Barcode
MICR
OCR

5. Output Devices are used to
show results of input entered by
user.

6. 3D Screens Projectors Holographic

7. Storage Devices are used to store
user data for future use.

8. HDD
SSD
Floppy Disk

9. Communication devices are used
to communicate two or more
computer with each other.

10. WIFI
Modem
Switch
Router