Computer hardware components are the physical devices that make up a computer, allowing software to run on them. Examples of these devices are keyboard, mouse, monitor etc
Input Hardware
Keyboards, Mouse, Touchpad, Touchscreen, Multi touch screen, Pen input, Motion sensor, Graphics tablet, Interactive smartboard,Joystick Gamepad, Microphone, Midi keyboard,Webcam Digital camera, Digital camcorder, Scanner, Barcode reader
Storage Hardware
Storage Secondary Storage Device, Mass Storage Device (MSD), Primary Storage Device, Random Access Memory (RAM), Cache Memory, Hard Disk Drive (HDD), Compact Disc-Read-Only Memory (CD-ROM), Direct Attached Storage (DAS), Disk Drive
Output Hardware
Monitor, Printer, Plotter, Projector, Speaker, Headphones, Light / LED, Projector's,
Processing Hardware
Central Processing Unit (CPU) Graphics Processing unit (GPU), Motherboard, Network card, Sound card