Toshiba Satellite A300D User Manual download pdf (Page 174)

User’s Manual 13

Glossary

Radio frequency interference (RFI) shield: A metal shield enclosing the

printed circuit boards of the printer or computer to prevent radio and

TV interference. All computer equipment generates radio frequency

signals. The FCC regulates the amount of signals a computing

device can allow past its shielding. A Class A device is sufficient for

office use. Class B provides a more stringent classification for home

equipment use. TOSHIBA portable computers comply with Class B

computing device regulations.

Random Access Memory (RAM): Volatile memory that can be written to

as well as read. Volatile here means that information in RAM is lost

when you turn off your computer. This type of memory is used for

your computer's main memory. See also memory. Compare ROM.

Read Only Memory (ROM): Non-volatile memory that can be read but not

written to. Non-volatile here means that information in ROM

remains whether or not the computer is receiving power. This type

of memory is used to store your computer's BIOS, which is

essential instructions the computer reads when you start it up. See

also BIOS, memory. Compare RAM.

resolution: A measure of the sharpness of the images that can be

produced by a printer or displayed on a screen. For a printer,

resolution is expressed in dots per inch (dpi). For a screen, it is

expressed as the number of pixels available horizontally and

vertically

restart: Resetting a computer without turning it off (also called "warm

boot", "soft reset" or "reboot"). See also boot.

RGB: Red, green, and blue. A device that uses three input signals, each

activating an electron gun for a primary additive color (red, green,

and blue) or port for using such a device. See also CRT.

RJ45: A modular LAN jack.

S/P DIF: A standard of digital interface for audio.

SCSI: Small Computer System Interface is an industry standard interface

for connection of a variety of peripheral devices.

SD/SDHC Card: Secure Digital cards are flash memory widely used in a

variety of digital devices such as digital cameras and Personal

Digital Assistants.

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Toshiba Satellite A300D User Manual Page 174