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Glossary
Extended Memory
A memory extension can be installed in a programming device to increase the size
of the memory.
F
File
A file is a collection of data under one name.
Formatting
Formatting divides the memory area on a magnetic data medium into tracks and
sectors. Formatting deletes all the data on a data medium. Every data medium
must be formatted before it is used for the first time.
Function Keys
Function keys can be divided into two different types; the normal function keys
which are assigned a particular function of the computer (for example, delete key),
and programmable function keys (softkeys).
G
Gender Changer
Using the gender changer (25 pin / 25 pin), the COM1/V24/AG SIMATIC PC family
port can be converted to the usual 25-pin male connector.
H
Hard Copy
The output of the complete contents of the screen on a printer is called a hard
copy.
Hard Disk Drive
Hard disk drives (Winchester drives) are a form of magnetic disk memory where
the magnetic disks are permanently built into the drive.
Glossary-6
SIMATIC Box PC 840 Manual
A5E00085984-04
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