| A | B |
|---|
| Ada | A high-level programming language that supports real-time applications |
| address | A unique binary representation of a location in memory |
| base unit | Unit that contains the motherboard, diskette drive, and hard disk drive |
| binary number system | Number system used by modern computers—uses only digits 0 and 1 |
| bit | A single 0 or 1 in binary code |
| bus topology | A LAN topology where each node of a network is connected to a single shared communication cable called a bus. |
| clock rate | The speed at which a CPU can execute instructions, measured in megahertz |
| client/server network | A group of computers, called clients, connected to a server. |
| COBOL | A high-level programming language that was designed by Grace Murray Hopper |
| computer | An electronic machine that accepts data, processes it according to instructions, and provides the results as new data |
| data bus | Transfers data between the CPU, memory, and other hardware devices on the motherboard |
| hardware | The physical components of the personal computer |
| hexadecimal system | Number system based on 16 digits. Also called base 16 |
| hub | A device that joins communication lines at a central location on the network. |
| input device | Used by the computer to accept data |
| LAN | A network that connects devices within a small area |
| mainframe | Computer system that is usually used for multi-user applications |
| memory | A component on the motherboard that stores data electronically |
| motherboard | The main circuit board inside the base unit |
| network | A combination of software and hardware that allows computers to exchange data and to share applications software and devices. |
