Epson Apex 20020, 20040 User Manual page 239

Epson user's guide desktop pc apex 200\20, apex 200\40
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Power-on diagnostics
The system tests the computer runs to check its internal
circuitry and configuration each time you turn it on.
Primary partition
The MS-DOS partition from which the operating system starts.
Program
A disk file that contains coded instructions and tells a
computer what to do and how to do it.
Prompt
A message displayed on the screen that tells you what action
you need to perform next.
RAM
Random Access Memory. The portion of the computer's
memory used to run programs and store data while you work.
All data stored in RAM is erased when you turn off the
computer; so you must store any data you want to keep on a
diskette or hard disk.
Read
To move data from one area to another. For example, when
you open a text file stored on disk, the computer reads the data
from the disk and displays it on the screen.
Read/write head
The physical device inside a disk drive that reads and records
data on the magnetic surface of a disk.
Real-time clock
A battery-powered clock inside the computer that keeps track
of the time and date, even when the computer is turned off.
Glossary 13

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