Appendix D: Glossary of Terms
Manual Number: 41209-003-2
Page D-1
Appendix D: Glossary of Terms
Bidirectional Parallel Port:
An eight-bit port that can be used for an input as well as an output device.
BIOS (Basic Input/Output Systems):
The on-board firmware which communicates with the display, keyboard, printers and other periph-
eral devices.
Bus:
One or more electrical conductors that transmit power or binary data to the various sections of a
computer.
CMOS (Complementary Metal Oxide Semiconductor):
A technique of fabricating transistors which uses very low power.
CMOS RAM:
Random Access Memory made from CMOS transistors.
DMA (Direct Memory Access Channel):
A channel for transferring data from host main memory to and from peripherals without direct
involvement of the CPU resources.
DRAM (Dynamic Random Access Memory):
The main memory in your computer. It needs to be refreshed by a memory or it will lose its
information.
EPROM (Erasable Programmable Read Only Memory):
A programmable device which stores information regardless of power. The information can be
erased and new information written.
Floating Point Unit (FPU):
A device which can perform calculations on numbers in floating point format as opposed to simple
integers.
IDE (Integrated Drive Electronics):
A standard of signalling and communicating with a device.
Summary of Contents for 586MBHP Series
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