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Beeper
The PTC-860’s internal beeper is used by the PTC and your
data collection program to warn you of problems or to prompt
you to take an action. For example, if your program has
temporarily turned off a key, the PTC beeps if you press it.
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Clock
The PTC-860’s built-in clock keeps track of the date (month,
day, year, and day of the week) and the time (hours, minutes,
and seconds). The clock operates continuously.
How the clock is used depends on your data collection program.
For example, the PTC-860 can use the clock to show the date
and time on its display or to direct a printer to place a time
stamp on a report.
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Memory
The PTC-860’s internal memory stores your organization’s data
collection program and the data you type into the PTC.
The amount of memory in your PTC determines how much
data you can type in before you have to send it to a host
computer or print it. Various amounts of memory are available
from Telxon, and the amount actually installed in your PTC
has been determined by your organization’s needs.
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Power backup system
The PTC-860 contains a lithium cell that is used as a backup
energy source when the main batteries are removed or are too
weak to provide adequate power. If used continuously, the cell
lasts twenty days. If the main batteries are always left in the
PTC and charged, the cell has a minimum five-year life.
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