Telxon PTC-921 DOS, User Manual

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ESD
Electrostatic discharge.
file
Any group or collection of related information stored
in memory. To add data to a file or to read data from a
file, the program must access the file by its file name.
flash EPROM
A type of erasable programmable read-only memory
that can be erased and reprogrammed electronically
while installed in a PTC.
frequency-hopping
(FH) radio
A type of radio that continually jumps from one
frequency to another to avoid interference.
function key
A key on the PTC’s keyboard that is defined by
an application to perform a specific task. When
pressed, a function key executes a certain function
(for example, ESC).
GND
Ground.
hardware
Equipment used in conjunction with programs or
data communication. Contrast with
software .
host
computer
A personal computer or mainframe that receives and
processes data from PTCs.
Hz
Hertz. A unit expressing frequency in vibrations per
second.
interface
The connection between two devices, defined by
common physical characteristics, signal character-
istics, and signal meanings.
laser scanner
A type of bar-code reader that uses a beam of laser
light.
LCD
Liquid crystal display.
LED
Light-emitting diode.
lithium-ion
battery
A type of rechargeable battery used to power the
PTC-921 DOS.
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