TuneUp Utilities - 2003 Manuel d'utilisateur télécharger pdf (Page 121)

121

the operating system needs to store parts of a file in noncontiguous

clusters. This is entirely invisible to users, but it can slow down the

speed at which data is accessed because the disk drive must search

through different parts of the disk to put together a single file.

To improve computer performance one should "defragment" the hard

disk once a month.

Hotkey

A key combination allowing to access a predefined application or

application function (e.g. CTRL-C to copy)

ISDN

Abbreviation of "integrated services digital network", an international

communications standard for sending voice, video, and data over digital

telephone lines or normal telephone wires. ISDN supports data transfer

rates of 64 Kbps (64,000 bits per second).

LAN

Short for "Local Area Network". A network within one location such as

a room, house or within a company building.

Main memory

A very fast data storage device (also known as physical memory) in

your computer than can be accessed randomly. Main memory is

volatile: all information stored in it is lost as soon as it is cut off from

electricity.

1 2 ... 116 117 118 119 120 121 122 123 124 125 126 127

Pas de commentaire

TuneUp Utilities - 2003 Manuel d'utilisateur Page 121