Titlebook: Mastering Global Information Systems; William Buchanan Textbook 1997Latest edition Macmillan Publishers Limited 1997 computer.control.info

Tempor

Data Compression,n systems have a limited data rate and data storage is restricted. For example an uncompressed digitized video stored on CD-ROM would only last 30 seconds (approximately 648 MB of data). Data compression normally involves analysing the source of the information and determining if there is redundant data in it

不来

sundowning

Integrated Services Digital Network (ISDN),ed data tends to create a constant traffic flow whereas computer-type data has bursts of traffic. Sampled data normally also needs to be delivered within a given time but computer-type data needs reliable paths where delays are relatively unimportant.

vitreous-humor

圆木可阻碍

Digital Information,n a digital format, but analogue signals, such as speech and video, require to be sampled at fixed intervals and then converted to a digital form. This process is known as digitization. The advantages of converting analogue information into digital are that:

符合规定

预定

The World Wide Web,nsmit data around the world. These servers run special programs which allow information to be transmitted to remote computers which are running a Web browser, as illustrated in Figure 4.1. The Internet is a common connection in which computers can communicate using a common addressing mechanism (TCP

FLIC

Asperity

我要威胁