Computer hardware is often delineated into three categories according to their function. Input - Devices which the user uses to enter data into the computer Output - Devices which the user uses to...
A basic computer consists of processor, hard drive, graphics chip/card, motherboard, memory, power supply and usually an optical drive. Extras can be added such as sound cards and tv tuners.
There are many pieces of hardware, such as:
1. RAM (memory)
2. HDD (hard disk drive)
3. CPU (Central Processing Unit)
4. Motherboard
5. Video Card (AGP, PCI-E, etc.)
6. CD/DVD/Blu-Ray/HD-DVD...
There is the power supply, hard drive, disk drive(s), USB drive, motherboard, processor, graphics card, sound card, monitor, SATA drives (if any), and many more.