NEC HX4500, User Manual, Page: 144 / 160

4 Glossary
EMS
(Expanded Memory Specification) A method of accessing memory beyond the
640K limit of DOS by exchanging data in and out of main memory at high speeds.
Some software requires EMS to operate.
EPROM
(Erasable Programmable Read-Only Memory) A type of memory device that is
usually used to store system BIOS code. This code can be erased with ultraviolet
light, but is not lost when the computer is powered off. See also flash EPROM and
ROM.
expanded memory
See EMS.
expansion slot
See backplane slot.
extended memory
The protected memory above 1M that is directly accessible by the microprocessor
through certain utilities and operating systems. This memory is used in computers
with 80286, 80386, and 80486 microprocessors.
F
flash EPROM
A type of memory device that is usually used to store system BIOS code. This code
can be replaced with updated code from a floppy disk, but is not lost when the
computer is powered off. See also EPROM and ROM.
floppy disk drive
See disk drive.
format
The process used to organize a hard or floppy disk into sectors so it can accept data.
Formatting destroys all previous data on the disk.
G
(Gigabyte)
1,073,741,824 bytes. See also byte.