Epson 4000 User Manual
Page 134
B o o t
The process a computer performs to check its components and
then load the operating system into memory.
Bus
A wire or group of wires that sends information between
components in the computer. The speed of a bus increases by
the number and width of the channels the bus uses to move
data.
Cache
A high-speed memory buffer that stores frequently used data
where your microprocessor can access it faster. Your computer
includes 8KB of internal cache expandable to 256KB with
external cache chips. See also External cache and Internal cache.
CMOS
Complementary Metal-Oxide Semiconductor. A low-power
silicon chip used for RAM and switching applications that is
backed up by a battery.
Conventional memory
The memory in the computer below 1MB that is available to
MS-DOS and application programs-usually 640KB. Also
called base memory or main memory.
Coprocessor
See
Math
coprocessor.
Copy-protected program
A program containing a software “lock” that prevents it from
being copied. See also Key disk.
2 Glossary