The forth component of a computer system is Hardware. Hardware is the physical components of the computer. These components consist of input hardware, output hardware, processing and memory hardware, secondary storage hardware, and communications hardware.
Input hardware is made up of the components that make it able to enter information into the computer. Some examples of this are a keyboard, Mouse, and scanning devices.
Output hardware is the hardware that is made by the computer and put into a form that humans can understand. Some examples of output hardware are The Monitor screen, the printer and the sound that comes out of the computer speakers.
Processing & Memory hardware is the part of the computer that does the work. It processes what the person types and it is able to save it. Two examples of this are the CPU and the memory.
Seconday Storage Hardware is the hardware that stores information permanently on a disk or a tape. Some examples of secondary storage hardware are a floppy disk, hard disk, optical disk, and magnetic tape.
Communications Hardware is hardware that enables different programs or two or more computers to work with one another. Some examples of the communications devices are a modem and cables.