Hardware components
Computer hardware includes the physical parts of a computer, such as the case,[1] central processing unit (CPU), monitor, keyboard, computer data storage, graphics card, sound card, speakers and motherboard.[2]
By contrast, software is the set of instructions that can be stored and run by hardware. Hardware is so-termed because it is “hard” or rigid with respect to changes, whereas software is “soft” because it is easy to change.
Hardware is typically directed by the software to execute any command or instruction. A combination of hardware and software forms a usable computing system, although other systems exist with only hardware.
Software components
Sometimes called componentware, software designed to work as a component of a larger application. A good analogy is the way personal computers are built up from a collection of standard components: memory chips, CPUs, buses, keyboards, mice, disk drives, monitors, etc.
Computers 