Computer Glossary a-b

application	A software program designed to perform a specific task or group of tasks, such as word processing, communications, or database management.
arrow key	Any of four to eight keys on a keyboard with arrows imprinted on them. Generally used for moving the cursor.
backup	To store data in an archive, especially a duplicate copy of a program. Also the archive itself.
bit	Short for Binary Digit. The smallest piece of information that a computer deals with.
.BMP (bitmap)	A common kind graphic file.
boot	To start the computer system. Your computer is generally booted in one of three ways: by turning on the power switch, by pressing the reset switch, or by simultaneously pressing the Ctrl, Alt, and Del keys. Booting the system after it has already been powered up and booted is referred to as rebooting. Also the process of booting itself. Boot is from "bootstrap;" a reference to a computer's ability to set itself up, or pull itself up by its own "bootstraps".
buffer	A place, especially in RAM, for the temporary storage of data for the purpose of speeding up an operation such as printing or disk access. Data from a buffer is available more quickly than data from where the buffer got it. Typically buffers get data before it is needed so it will be ready quickly when it is needed. Similar to cache. THe Windows' clipboard is an example of a buffer.
bug	An unintentional error in programming that makes a program malfunction.
byte	Eight bits. See bit.