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Digital Video Disks:
DVD stands for Digital Video Disks or Digital Versatile Disks. A DVD stores much more data than a CD-ROM. Its capacities are 4.7GB, 8.5GB, and 20GB etc. The capacity depends on whether it is a single layer, double layer; single sided or double sided disk. DVD uses laser beam of shorter wavelength than CD-ROM uses and therefore more tracks are available. Working principles of DVD disks are same as those of a CD-ROM, CD-R or CD-RW.
The Speed of CD-ROM or DVD-ROM is given in terms of nX, where n is an integer. For example 32X. In case of CD, X=150 KB/s, so 32X=32x150=4.8 MB/s. In case of DVD, X=1.38 MB/s.
Process Control Management: A process is an executing program. It is considered the standard unit of work within a computer system. Every executing program is treated as a
SOFTWARE EVOLUTION: As you know that in a computer system both hardware and software complement each other - one is of hardly any use without the other. Hence, since the ve
SWITCHING MECHANISMS: Switching mechanisms are techniques devised to send messages in many dinections at once and to ensure that these messages are received with a minimum of
exchanging the two variables: problem,algorithm development,discription
Computerised Systems : You would have realized by now that computing systems are most useful for manipulating information. Any organisation and management of information basically
In a certain word game a player can buy vowels and consonants. The first vowel is free; each additional vowel cost $1. The first two consonants are free; each additional constant c
what is operating system
Application-Specific Multiprocessors Although this book details a variety of similar architectures, it specializes in the design of such architectures in the perspective of par
Super Computers: The specialised demands and requirements of science, industry and military have led to the creation of powerful super computers. For numerically intensive com
TRANSMISSION MEDIA: When we speak of transmission media, we usually mean a mix of physical lines ranging from wire pairs to cable, and over the air transmission media, such as
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