The chips are plugged into circuit boards. In the small computers called microcomputers or personal computers, the processor is a single chip, called a microprocessor. The CPU uses the computer's memory to hold pieces of information while it processes information. These pieces of information are represented electronically in the memory chips circuitry, and while it remains in memory, the computer can access it directly. When you turn off or reset the computer, the information disappears unless stored on a storage device.
Input devices accept data and instructions from other users.
The place a computer keep's data that it isn't processing at one time. The most common storage medium is the magnetic disk Programs A set of electronic instructions that resides in the storage area of the computer, waiting to be executed by the main control logic of a computer.