Sony VAIO PCV-RX312 User Manual page 86

Glossary
Term
MPEG
Operating system
Partition
PBX
Pixel
Processor
Product recovery CD-ROM
Definition
MPEG or Moving Pictures Experts Group is a standard for audio-visual compression of video
sequences. MPEG achieves high compression rates by storing only the changes from one
frame to another. The decrease in data is generally imperceptible to the human eye.
MPEG-1 was developed for digital storage of video and audio data on CD-ROM. MPEG-2
achieves better image and audio quality and is more targeted to TV broadcasting and DVD.
The operating system is software that manages all the other programs in a computer. It
defines how the computer reads and writes information to its disks (and other hardware).
Windows 2000, Windows Millennium Edition, Windows XP Professional and Windows XP
Home Edition are examples of operating systems found on VAIOs.
A partition is a logical division of a computer's hard disk. A two-partition hard drive would
typically contain C: and D: drives. Partitioning is particularly useful if you run more than one
operating system or to clearly separate your data files from your installed software.
A PBX (Private Branch Exchange) is a private telephone network within an enterprise. Under
this system, the calls between the enterprise members are local and the phone numbers are
made up of 3 or 4 digits. Companies generally choose this phone system for internal
communication because it is less expensive than the regular network. The users can still
share a number of outside lines for making calls external to the PBX.
A pixel (Picture Element) is a part of your screen. Your screen is made up of thousands of
pixels, enabling you to see colours and pictures on it. The more pixels, the higher the
resolution and the better the image quality.
The processor is the brains of the computer; it processes the instructions of your system's
programs. The processor is also known as the CPU or microprocessor and can be found on
the motherboard (see this word) of your computer.
The product recovery CD-ROMs include the application recovery CD-ROM and the system
recovery CD-ROM(s)
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