Abbreviations
C.1 Abbreviations
SIMATIC Box PC 627
C-2 Operating Instructions, Release 05/2006, A5E00362052-03
Abbreviation Term Meaning
CSA Canadian Standards Association Canadian organisation for tests and certifications
according to own or binational standards (with UL
/ USA) standards
CTS Clear To Send Clear to send
DRAM Dynamic Random Access Memory
DC Direct Current DC current
DCD Data Carrier Detect Data carrier signal detection
DMA Direct Memory Access Direct memory access
DOS Disc Operating System Operating system without GUI
DP Decentralized peripherals
DQS Deutsche Gesellschaft zur Zertifizierung
von Qualitätsmanagement mBH
DDRAM Double Data Random Access Memory Memory chip with high-speed interface
DSR Data Set Ready Ready for operation
DTR Data Terminal Ready Data terminal is ready
DVD Digital Versatile Disc Digital versatile disk
DVI Digital Visual Interface Digital display interface
ECC Error Correction Code Error correction code
ECP Extended capability port Extended parallel port
EGA Enhanced Graphics Adapter PC to monitor interface
ESD Components sensitive to electrostatic
charge
DM Electronic Manual
EIDE Enhanced Integrated Drive Electronics An enhancement of the IDE standard
EISA Extended Industry Standard Architecture Extended ISA standard
EMM Expanded Memory Manager Manages memory expansions
EM64T Extended Memory 64 technology
EN European standard
EPROM / EEPROM Erasable Programmable Read-Only
Memory / Electrically Erasable
Programmable Read-Only Memory
Plug-in submodules with EPROM/EEPROM chips
EPP Enhanced Parallel Port Bi-directional Centronics interface
ESC Escape character Control character
EWF Enhanced Write Filter
FAQ Frequently Asked Questions FAQs
FAT 32 File Allocation Table 32-bit 32-bit file allocation table
FD Floppy disk Disk drive, 3.5"
FSB Front Side Bus
GND Ground Chassis ground
HD Hard disk Hard disk
HDA High Definition Audio
HU Height unit
HMI Human Machine Interface User interface
HT Hyper-Threading
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