The Central Processing Unit is usually a small chip, which can process vast amounts of information. This central processing unit, or chip, is usually called the CPU .
Schools operate bus systems to transport students to school.
If the seats are wide, more students can sit side by side in each row, and more can travel at once. Similarly, computers have bus systems that transport information from one part of the computer to another. The permanent storage disk that stays in the computer is called the hard drive . Peripherals are parts added on to the computer to allow it to do special tasks. A printer is a peripheral.