Siemens PC 677B Operations Instructions Page 245

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SIMATIC Panel PC 677B
Operating Instructions, 05/2007, A5E01035609-01
245
List of Abbreviations/Acronyms
B
B.1 Abbreviations
Abbreviation Term Meaning
AC Alternating current Alternating current
ACPI Advanced Configuration and Power
Interface
PLC Programmable controller
APIC Advanced Programmable Interrupt
Controller
Extended programmable interrupt controler
APM Advanced Power Management Tool for monitoring and reducing power
consumption of the PC
AS Automation system
AT Advanced Technology
ATA Advanced Technology Attachment
AWG American Wire Gauge US standard for the cable diameter
BIOS Basic Input Output System Basic Input Output System
CAN Controller Area Network
CE Communauté Européenne (CE symbol) The product is in conformance with all applicable
EC directives
CF Compact Flash
CLK Clock pulse Clock signal for controllers
CMOS Complementary Metal Oxide
Semiconductors
Complementary metal oxide semiconductors
COA Certificate of authentication Microsoft Windows Product Key
CoL Certificate of License License authorization
COM Communications Port Term for the serial interface
CP Communication Processor Communication computer
CPU Central Processing Unit CPU
CSA Canadian Standards Association Canadian organization 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
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