Epson Pollution Preventer User Manual page 123

Serial
A way of organizing communications between two pieces of
computer equipment in which the signals that make up each
character are sent sequentially. See also Parallel.
Shadow RAM
The function that copies the system BIOS and video BIOS from
ROM into RAM to speed up performance.
SIMM
See Memory Module.
VGA
Video Graphics Array. A high-resolution (640 x 480) display
adapter standard.
Write-protect
To prevent a diskette from being overwritten. When a diskette
is write-protected, you cannot erase, change, or record over its
contents.
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G l o s s a r y