Fujitsu 990TX2 Hard Disk, Hexadecimal, I/O Port, Impedance, Infrared, IrDA, Kilobyte, Hard Drive

A p p e n d i c e s

Hard Disk

A spinning platter of magnetic data storage media where the platter is very stiff.

Hard Drive

The hardware which spins the stiff disk of mag- netic material and has the heads and control circuitry for reading and writing the data on the disk as well as the disk itself.

Hexadecimal

A decimal notation for the value of a 4 bit binary number. (0-9,A, B, C, D, E, F) Example: 2F in hexadecimal = 00101111 in binary = 47 in decimal.

I/O

Input/Output. Data entering and leaving your computer in electronic form.

I/O Port

The connector and associated control circuits for data entering and leaving your computer in electronic form.

IDE

Intelligent Drive Electronics.A type of control interface for a hard disk drive which is inside the hard disk drive unit.

Impedance

The amount of resistance to the flow of electric current.

Infrared

Light just beyond the red portion of the visible light spectrum which is invisible to humans.

IR

An abbreviation for infrared.

IrDA

Infrared Data Association. An organization which produces standards for communication using infrared as the carrier.

IRQ

Interrupt Request. An acronym for the hard- ware signal to the CPU that an external event has occurred which needs to be processed.

KB

Kilobyte.

Kilobyte

1,024 bytes (2 raised to the tenth power).

K56flex Modem

The modem protocol co-authored by Lucent and Rockwell that enables high speed internet downloads over standard telephone lines. Traditional modems assume that both ends of a modem communication have an analog connection to the public switched telephone network.K56flex takes advantage of the situation with one end of the communication being a high speed digital connection.

LAN

Local Area Network. An interconnection of computers and peripherals within a single limited geographic location which can pass programs and data amongst themselves.

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