NEC Versa 550 Series Service Manual page 123

RS-232C
Standard interface for serial devices. This port is sometimes re-
ferred to as the serial port.
scanner
An optical device that reads printed material and converts it to a
computer screen image.
serial interface
An interface that communicates information one bit at a time.
serial printer
A printer with a serial interface.
software
Programs that run on a computer such as operating systems, word
processors, and spreadsheets.
system board
The main printed circuit board inside the system unit into which
other boards and major chip components, such as the system mi-
croprocessor, are connected.
TFT
Thin Film Transistor. A type of Versa LCD color screen that sup-
ports 256 colors and provides exceptional screen display.
VGA
Glossary 11