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Disc-at-once
With this burning technique, data are written to a CD in a single session, and the CD is then
closed. Further write access is then no longer possible.
DP
Display Port: New digital monitor interface.
Drivers
Program parts of the operating system. They adapt user program data to the specific formats
required by I/O devices such as hard disk, printers, and monitors.
Dual Core CPU
Dual-core processors significantly increase the speed of computing and program execution
compared to the previous generation of single-core processors with hyperthreading
technology.
ECC
Error checking and correction is a method for detecting and correcting errors when saving
and transferring data, frequently used in conjunction with RAM modules with and without
ECC.
EMC directive
Directive concerning Electromagnetic Compatibility. Compliance is confirmed by the CE
symbol and the EC certificate of conformity.
Energy management
The energy management functions of a modern PC allow individual control over the current
consumption of vital computer components (e.g. of the monitor, hard disk and CPU), by
restricting their activity based on the current system or component load. Energy
management is of particular importance for mobile PCs.
Energy options
The energy options can be used to reduce energy consumption of the computer, while
keeping it ready for immediate use. This can be configured in Windows by selecting Settings
> Control Panel > Energy options.
Enhanced Write Filter (EWF)
Configurable write filter that allows you, for example, to boot Windows Embedded Standard
from write-protected media (such as CD-ROM), to write protect individual partitions and
adapt the performance of the file system to your needs (when using Compact Flash cards).
SIMATIC HMI IPC577C
Operating Instructions, 10/2010, A5E02368074-02
Glossary
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