Epson ActionDesk 4000 User Manual - Page 135

External cache, Device driver, Display adapter curd, Expanded memory

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CPU Central Processing Unit. The primary device that interprets instructions, performs tasks, keeps track of stored data, and controls input and output operations. See also Microprocessor. Device driver A file containing instructions that allow your computer to recognize and communicate with a device. The device may be a printer, monitor, or other type of device. Display adapter curd A circuit board that controls the way a monitor displays text and graphics, normally installed in an option slot. Also called video card. This computer does not support optional display adapter cards. (A VGA display adapter is built into your computer's main system board.) Expanded memory Memory that specially written MS-DOS programs can use when an expanded memory manager program maps that memory into an accessible area. Extended memory Memory above 1MB that is accessed by 386 or 486 microprocessors when they are operating in protected or virtual mode. This memory is available to OS/2 programs, but is available to MS-DOS only if an extended memory manager program is installed. See also Expanded memo y. External cache Optional cache chips you can install on the system board to increase cache memory. Glossary 3

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CPU
Central Processing Unit. The primary device that interprets
instructions, performs tasks, keeps track of stored data, and
controls input and output operations. See also
Microprocessor.
Device driver
A file containing instructions that allow your computer to
recognize and communicate with a device. The device may be a
printer, monitor, or other type of device.
Display adapter curd
A circuit board that controls the way a monitor displays text
and graphics, normally installed in an option slot. Also called
video card. This computer does not support optional display
adapter cards. (A VGA display adapter is built into your
computer’s main system board.)
Expanded memory
Memory that specially written MS-DOS programs can use
when an expanded memory manager program maps that
memory into an accessible area.
Extended memory
Memory above 1MB that is accessed by 386 or 486
microprocessors when they are operating in protected or
virtual mode. This memory is available to OS/2 programs, but
is available to MS-DOS only if an extended memory manager
program is installed. See also
Expanded memo y.
External cache
Optional cache chips you can install on the system board to
increase cache memory.
Glossary
3