G
lossary
alphanumeric
Describes a character set that contains letters, numbers, and
symbols such as punctuation marks.
application
A PTC program that is designed to perform a specific task for
the user. Examples include route accounting, payroll, price
lookup, shipping, and inventory control.
application
flash EPROM
An electronic component soldered into a PTC that contains
the unit’s data collection program. It can be erased and
reprogrammed while in the PTC.
bar code
A series of vertical bars and spaces used to encode numeric or
alphanumeric information. Bar codes are designed to be read by
electronic means such as bar-code readers or laser scanners.
bar-code
reader
An electrical device designed to recognize and decipher bar-code
labels. When the reader passes over the bar code, it converts the
bar code into electrical signals representing data. The PTC can
then enter this data into files in its memory.
CD
Carrier detect signal. CD indicates that the modem is receiving
a signal from the remote modem.
character
A letter, number, or symbol.
cloning
The process of copying a program or data files from one PTC
directly to another.
CTS
Clear-to-send signal. CTS indicates that the line between a
modem and a terminal device is clear for transmission. CTS
typically follows a raised request-to-send (RTS) signal.
data
communication
The transport of encoded information from one point to another.
DCE
Data communications equipment. A device that controls and
converts incoming data or communication. For example, a
modem.
ÄÄ
61
