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Sony Notebook User Guide
Glossary
109
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i.LINK™
i.LINK™ is Sony’s version of the IEEE 1394 standard for high-speed digital serial interface.
The standard is regarded in the audio/video and IT industries as the most suitable interface
for connecting computers and digital audio/video devices (such as digital cameras etc.).
ISP
An ISP (Internet Service Provider) is a company which provides you with a user name,
password and telephone number in order to connect to the Internet.
L2 cache memory
Cache memory is RAM-like memory that enables quick access to data that has already been
read by the computer. L1 and L2 are levels of cache memory in a computer.
LAN
A LAN (Local Area Network) is a group of computers connected together within a limited
geographical area. It enables users to share devices (such as printers) and information using
one processor or server.
LCD
Short for Liquid Crystal Display. Flat notebook display technology using liquid crystals (and
light polarisation) to provide sharp, flicker-free images on a screen comprised of millions of
tiny cells. Colour can be produced by two basic techniques. Passive matrix is the less
expensive of the two technologies. The active matrix technology (or TFT) produces better
quality but is also more expensive.
LED
Short for Light-Emitting Diode. A semiconductor device that lights up when electricity passes
through it.
Lithium-ion battery
A lithium-ion battery uses lithium cobalt oxide and carbon as electrodes and ions move from
one electrode to the other during charge and discharge. Lithium-ion batteries are the first
choice for notebooks because of their light weight, high energy density and because they
have no memory effect. In addition they do not use heavy metals like lead, mercury or
cadmium.
MAPI
Short for Messaging Application Program Interface. A Microsoft Windows interface
enabling you to send e-mail messages. It allows e-mail access and distribution among
applications. MAPI-compatible applications include a Send Mail or Send in the File menu of
the application.
Term Definition