HP Brio 83xx HP BRIO PC - Online Reference Guide, Not Orderable - Page 73
Glossary, Cache, CD-ROM, Controller, Device driver, DMA channel, Hard disk
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Glossary AGP Accelerated Graphics Port. Standard for computer bus architecture. BIOS Basic Input/Output System. Code within the computer that controls the input and output data. Bus An electrical connection over which information is transported. Cache A block of memory used for the temporary storage of data. CD-ROM Compact Disc-Read Only Memory. A storage device that uses compact disc technology. CDs can store data, but cannot be written to, hence the term "read-only". CMOS Complementary Metal-Oxide Semiconductor. A separate portion of your computer's memory, the contents of which are preserved when you turn off the computer. CMOS memory stores information that must be maintained, such as your computer's configuration. Controller A device that enables another device to communicate with the computer. CPU Central Processing Unit. The CPU is invariably a single chip, the microprocessor. The speed of the CPU is determined by the clock rate. DAT Digital Audio Tape. Device driver Software that enables the computer to work with a specific peripheral, such as a printer. DIMM Dual In-line Memory Module (64 or 72-bit data path) DMA Direct Memory Access. A DMA channel allows certain types of data transfer between RAM and a device to bypass the microprocessor. DMA channel Direct Memory Access channel. Speeds up I/O to and from the system's memory by avoiding CPU processing. However, the system limits the number of cards that can use DMA. DRAM Dynamic Random Access Memory. ECC Error Correcting Code can detect and correct errors in memory modules. EDO Extended Data Output. A memory system for use with a PCI bus structure that allows faster use of DRAM and also allows part of the main memory to be used as a fast cache. EPA Environment Protection Agency. Sets standards, such as the Energy Star Award. FDD Floppy Disk Drive. Hard disk Storage device for computer providing read and write storage. This is one type of mass storage device. IDE Integrated Device Electronics. A protocol for communications between the computer and a disk drive. 73