Toshiba Satellite R20 User Manual - Page 284

284 Glossary C cache - A section of very fast memory in which frequently used information is duplicated for quick access. Accessing data from cache is faster than accessing it from the computer's main memory. See also CPU cache, L1 cache, L2 cache. CD - An individual compact disc. See also CD-ROM. CD-ROM (compact disc read-only memory) - A form of highcapacity storage that uses laser optics instead of magnetic means for reading data. See also CD. Compare DVD-ROM. central processing unit (CPU) - The chip that functions as the "brain" of the computer. It takes information from outside sources, such as memory or keyboard input, processes the information, and sends the results to another device that uses the information. character - Any letter, number, or symbol you can use on the computer. Some characters are non-printing characters, such as a paragraph break in a word-processing program. A character occupies one byte of computer storage. chip - A small piece of silicon containing computer logic and circuits for processing, memory, input/output, and/or control functions. Chips are mounted on printed circuit boards. click - To press and release the primary control button adjacent to the TouchPad or the mouse button without moving the TouchPad or mouse. In the Windows® operating system, this refers to the TouchPad left control button or the left mouse button, unless otherwise stated. See also double-click. color palette - A set of specified colors that establishes the colors that can be displayed on the screen at a particular time. compatibility - The extent to which computers, programs, or devices can work together harmoniously, using the same commands, formats, or language as another. configuration - (1) The collection of components that make up a single computer system. (2) How parts of the system are set up (that is, configured).