Input
Anything that goes into the machine. Input may take several forms, ranging from keyboard input commands to data from another machine or device. An input device is called a device which feeds data into a computer, such as a keyboard or mouse.
Output
All that comes out from a machine. Screens, loudspeakers, and printers are viewed as outputs.
Processing
A processor is a computer’s brain. The ‘’CPU’’ (Central Processing Unit) is also named, and it is a microchip.
Storage
Computer data storage, which can save digital data, is referred to as storage or memory. RAM, hard disks or disposable memory sticks are examples.