L i f e B o o k N S e r i e s U s e r ’ s G u i d e
DMA
Direct Memory Access. Special circuitry for memory to memory transfers of data which do not require CPU action.
DOS
Disk Operating System
Driver
A computer program which converts application and operating system commands to external devices into the exact form required by a specific brand and model of device in order to produce the desired results from that particular equipment.
DVD
Digital Video Disc. This is a form of optical disc storage for video, audio and computer data, envisioned to replace current digital storage formats
ECP
Extended Capability Port. A set of standards for high speed data communication and interconnection between electronic devices.
ESD
Electrostatic Discharge. The sudden discharge of elec- tricity from a static charge which has
Extended Memory
All memory more than the 640KB recognized by
FCC
Federal Communication Commission.
Floppy Disk
A spinning platter of magnetic data storage media which is highly flexible.
GB
Gigabyte.
Hard drive
A spinning platter of magnetic data storage media where the platter is very stiff.
Hexadecimal
A decimal notation for the value of a 4 bit binary number.
I/O
Input/Output. Data entering and leaving your LifeBook notebook in electronic form.
I/O Port
The connector and associated control circuits for data entering and leaving your LifeBook notebook in elec- tronic form.
IDE
Intelligent Drive Electronics. A type of control interface for a hard drive which is inside the hard drive unit.
IEEE 1394
A type of data transfer protocol that allows for fast transfer of digital files and data with devices such as digital cameras.
IRQ
Interrupt Request. An acronym for the hardware signal to the CPU that an external event has occurred which needs to be processed.
KB
Kilobyte.
LAN
Local Area Network. An interconnection of computers and peripherals within a single limited geographic location which can pass programs and data amongst themselves.
LCD
Liquid Crystal Display. A type of display which makes images by controlling the orientation of crystals in a crystalline liquid.
Lithium ion Battery
A type of rechargeable battery which has a high power- time life for its size and is not subject to the memory effect as Nickel Cadmium batteries.
MB
Megabyte.
Megahertz
1,000,000 cycles per second.
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