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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.
ARDIS
Advanced Radio Data Information Service. A wide
area radio frequency data network.
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
An electrical device designed to recognize and
reader
decipher bar-code labels. When the bar-code 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.
BIOS
Basic Input/Output System.
boot or boot-up
The process a PTC goes through when it first starts
up. During boot-up, the PTC can run self diagnostics
and configure hardware and software.
bps
Bits per second.
bridge battery
A battery used to protect data in the PTC's memory
when power to the unit is disconnected.
byte
A group of eight bits that acts as a basic unit for
information transfer and storage.
CD
Carrier detect signal. CD indicates that the modem is
receiving a signal from the remote modem.
character
A letter, number, or symbol.
Glossary
60
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