| A | B |
|---|
| supercomputer | The fastest type of computer currently available, it is very expensive and primarily used for "number-crunching." |
| mainframe | A large computer system capable of quickly processing enprmous quantities of data. |
| minicomputer | A computer with many of the capabilities of a mainframe, but runs slower, has less memory, and costs somewhat less. |
| microcomputer | A small, relatively inexpensive computer, usually designed to be used by one person at a time. |
| binary code | A sequence of 1s and 0s that is ulsed to give instructions to computers. Generally speaking, a 1 is represented by the presence of electrical current (or a switch being on) while a 0 is represented by its absence ( or a switch being off). |
| microprocessor | The "brain" of the computer on a single chip. |
| notebook computer | A portable computer designed to fit into a briefcase and generally weighing under 10 pounds. The display screen is usually in the notebook's lid. |
| subnotebook computer | Similar to a notebook computer but smaller; it usually weighs under five pounds. |
| personal digital assistant (PDA) | A small portable computer that fits into the palm of a hand.l A stylus is used to give instructions and choose from lists of options.l |
| workstation | A powerful, relatively expensive microcomputer, often used by engineers and technical illustrators. Workstations use RISC technology and often use a Unix operating system. |
| embedded system | A microprocessor that is built into a piece of electromic equiptment, such as a VCR or automobile. Any instructions needed by the microprocessor are "hard-coded" into it. |
