Table of Contents
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RAM
Random Access Memory. This memory is used to hold programs and data temporarily.
resolution
A measure of the visible detail on a screen or printout. Screen resolution is measured in 'pixels
across' by 'pixels down' by 'number of colors'. Printer resolution is measured in dpi (dots-per-
inch).
ROM
Read-Only Memory. Computer memory used to store parts of the computer's operating system
permanently. ROM chips can contain instructions and data.
SCSI
Small Computer System Interface. A high-speed data bus used for connecting hard disks, tape
drives, and other accessories to your computer.
SCSI chain
Devices connected on a single SCSI bus.
Setup program
Used to inform the computer about its configuration, for example the amount of memory
installed. The setup program is stored in ROM on the system board.
shadow RAM
A method of relocating the system and/or video BIOS from slower ROM chips to faster RAM to
improve system performance.
SIMM
Single In-line Memory Module. A small board containing several RAM chips.
terminator
A resistor at the end of a SCSI cable that prevents the signal from reflecting back along the
cable.
video controller
A chip or expansion card which converts signals in the computer into displayable signals.
video RAM
Memory that enables or speeds up drawing to the screen or increases resolution or color
options.
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