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Password
Unique sequence of characters that is entered for user identification. See Access
Protection.
PC
Personal computer
PC Card
A PC Card is a removable device, approximately the same size as a credit card,
that is designed to plug into a PCMCIA slot. Release 1 of the PCMCIA
specification specified a Type I card that is 3.3 millimeters thick and is intended to
be used primarily as a memory-related peripheral. Release 2 of the PCMCIA
specification specifies both a 5-millimeter-thick Type II card and a
10.5-millimeter-thick Type III card. Type II cards accommodate devices such as
modem, fax, and network cards. Type III cards accommodate devices that require
more space, such as wireless communications devices and rotating storage media
(such as hard disks).
PCI
Peripheral Component Interconnect (fast expansion bus).
PCMCIA
(Personal Computer Memory Card International Association). Association of about
450 computer companies with the aim of setting worldwide standards for
miniaturizing PC expansion cards and making their use more flexible, offering the
market a basis for development. Cooperates with JEIDA.
PG
Programming device
PG Interface
The PG (programming device) interface is a serial port; it is located on a CPU, a
CP/IP, or a coordinator module (PG-MUX) and is used to connect a programming
device. Some CPUs may have two PG interfaces as an option.
Pixel
Pix Element (picture point). The pixel represents the smallest element that can be
reproduced on-screen or on a printer.
SIMATIC Box PC 840 Manual
A5E00085984-04
Glossary
Glossary-11
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