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ACPI (Advanced Configuration and Power Interface) is a power management
specification that allows the operating system to control the amount of power
distributed to the computers devices. Devices not in use can be turned off,
reducing unnecessary power expenditure.
AGP (Accelerated Graphics Port) is a PCI-based interface which was
designed specifically for demands of 3D graphics applications. The 32-bit
AGP channel directly links the graphics controller to the main memory.
While the channel runs at only 66MHz, it supports data transmission during
both the rising and falling ends of the clock cycle, yielding an effective speed
of 133MHz.
AT was the original form factor of IBMs PC.
ATAPI (AT Attachment Packet Interface), also known as IDE or ATA, is a
drive implementation that includes the disk controller on the device itself. It
allows CD-ROMs and tape drives to be configured as master or slave devices,
just like hard drives.
ATX form factor was designed to replace the AT form factor. It improves on
the AT design by rotating the board ninety degrees, so that the IDE connec-
tors are closer to the drive bays, and the CPU is closer to the power supply
and cooling fan. The keyboard, mouse, serial, USB, and parallel ports are built
in.
Appendix 1
Glossary
Appendix 1
Glossary