Sony V
A
IO
Desktop User
Guide
Glossary
114
Motherboard
The motherboard is the main circuit board inside your computer. It holds the CPU, the BIOS,
the memory and so on.
MPEG
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.
Operating system
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.
Optical mouse
An optical mouse is an advanced computer pointing device that uses a light-emitting diode
(LED), an optical sensor, and digital signal processing (DSP) in place of the traditional mouse
ball and electromechanical transducer. Movement is detected by sensing changes in
reflected light, rather than by interpreting the motion of a rolling sphere. The optical mouse
takes microscopic snapshots of the working surface at a rate of more than 1,000 images per
second.
Partition
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.
PBX
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.
Term
Definition
