Here's a really simplified concept of the different parts of a typical desktop computer you might find in someone's house, organized in no real order:
input (mouse/keyboard)
output (monitor/speakers)
case (to house the hardware, to include a power button, etc)
processor (example: a 3.2GHz Intel Core 2 Duo "CPU")
memory (ram: i.e, 2GB of ram, a cache to keep info used in currently-happening tasks)
storage (a 320gb hard drive, a floppy/cd/dvd drive - something that has long-term data)
motherboard (mounted on the wall of the case, all hardware connects to this)
sound card (might be built-in to your motherboard, plug speakers into it for sound)
video card (might be built-in to your motherboard, plug monitor into it for visuals
power supply (gets power from wall outlet, precisely routes it to parts)
cooling system (might be a lot of fans in your case, maybe there is a liquid cooling, etc)
The components of computer which can be touched are called hardware component without hardware components computer are not useful.
When you purchase a computer with self assemble you just require MotherBoard , DVD Writter,PowerSupply,RAM,Harddisk.These are important component of computer.
Computer has two major components namely: Computer Hardware and Computer Software
Computer hardware is the components that make up a computer. Computer architecture is the model used to combine the Hardware into a working unit.
Hardware is something you can touch. So it is the physical components of the computer.
Hardware
hardware and software
the three major hardware components of a computer are primary memory, secondary memory and object oriented programing.
A monitor is not normally considered hardware, the internal components of a computer are considered hardware.
Do you want a software to collect the computer‘s hardware information from LAN ?
A computer hardware engineer is involved in the design and development of systems and components. This would include hardware such as processors and circuit boards.
It is the components of the computer that you can physically touch, software is programming installed on the hardware.