Toshiba Qosmio F20-110 User Manual page 264

Glossary
I/O: input/output
IrDA: Infrared Data Association
IRQ: interrupt request
KB: kilobyte
LCD: liquid crystal display
LED: light emitting diode
LSI: large scale integration
MB: megabyte
OCR: optical character recognition (reader)
PCB: printed circuit board
PCI: peripheral component interconnect
RAM: random access memory
RGB: red, green, and blue
ROM: read only memory
RTC: real time clock
SCSI: small computer system interface
SIO: serial input/output
SXGA+: super extended graphics array plus
TFT: thin-film transistor
UART: universal asynchronous receiver/transmitter
USB: Universal Serial Bus
VESA: Video Electronic Standards Association
VGA: video graphics array
VRT: voltage reduction technology
WXGA: wide extended graphics array
XGA: extended graphics array
A
adaptor: A device that provides an interface between two dissimilar
allocate: To assign a space or function for a specific task.
alphanumeric: Keyboard characters including letters, numbers and other
alternating current (AC): Electric current that reverses its direction of flow
analog signal: A signal whose characteristics such as amplitude and
Glossary-2
electronic devices. For example, the AC adaptor modifies the power
from a wall outlet for use by the computer. This term also refers to
the add-in circuit cards that control external devices, such as video
monitors and magnetic tape devices.
symbols, such as punctuation marks or mathematical symbols.
at regular intervals.
frequency vary in proportion to (are an analog of) the value to be
transmitted. Voice communications are analog signals.
User's Manual