Siemens PCIL43 Eide, Eisa, Emm, EM64T, Eprom / Eeprom, Epp, Esc, Ewf, Faq, Fsb, Gnd, Hda, Hmi

		Abbreviations
		C.1 Abbreviations
Abbreviation	Term	Definition
EIDE	Enhanced Integrated Drive Electronics	An enhancement of the IDE standard. Enhanced
		IDE is the standard for a hardware interface. This
		interface is designed for disk drives operating
		with internal disk drive controllers. This allows
		standardization of interfaces for the system,
		ensuring enhanced functions (e.g. burst packet
		transfer and direct data access.)
EISA	Extended Industry Standard Architecture	Enhanced ISA standard, introduced to the market
		in the year 1988; based on 32-bit data bus and
		24-bit address bus;
		Competitor to the IBM 32-bit bus system MCA.
EMM	Expanded Memory Manager	Manages memory expansions
EM64T	Extended Memory 64 technology	Processor works with 64 Bit data capacity.
		Dependant on application, this can provide
		increased performance. In order to use all of the
		advantages, the operating system, drivers and
		applications must support 64 bit operation.
EN	European standard
EPROM / EEPROM	Erasable Programmable Read-Only	Plug-in submodules with EPROM/EEPROM
	Memory / Electrically Erasable	chips. S5/S7 user programs can be permanently
	Programmable Read-Only Memory	stored on them, for example. This programmed
		module is then inserted into the prepared slots of
		the PCs / automation devices / PLCs.
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. The table is maintained
		and managed by the operating system; provides
		details of the distribution of hard disk data.
FD	Floppy disk	Disk drive, 3.5"
FSB	Front Side Bus	Physical interface between the processor and PC
		RAM. It is used for communication between the
		motherboard and the other components in a
		computer system.
GND	Ground	Chassis ground
HD	Hard disk	Hard disk drive
HDA	High Definition Audio	(Previously AZALIA). Successor of the AC97
		Standard; bus between chipset and audio/modem
		device
HU	Height unit
HMI	Human Machine Interface	User interface
HT	Hyper-Threading	HT technology enables the parallel processing of
		tasks. HT is only effective when all relevant
		system components, such as processors,
		operating systems and applications are
		supported.
HTML	Hyper Text Markup Language	Script language for creating Internet pages.
HTTP	Hypertext Transfer Protocol	Protocol for data transfer on the Internet

SIMATIC Rack PC IL 43	C-3
Operating Instructions, Edition 09/2005, A5E00432875-01