Resume; Clock; Internal Heater (Freezer Units Only) - Symbol PTC-870IM User Manual

The documentation provided with
the Telxon Pen-based 11x4 Series
Software Development Kit contains
programming instructions.
The clock can be set using the
MS-DOS TIME and DATE commands.
The second stage begins after approximately 17
minutes of inactivity. The PTC automatically notes
where you are in the application, stores that
information, saves any data, and turns itself off.
The Power LED also turns off.
The exact amount of time before the PTC goes into
either sleep state depends on how your PTC is
programmed.

Resume

If the PTC is in one of the sleep stages, pressing the
On/Off button turns the PTC back on and returns you
to the point at which you left the application.

Clock

The PTC-870IM has a built-in clock that keeps track
of the date (month, day, year, and day of the week)
and the time (hours, minutes, seconds, and tenths of
seconds). The clock operates continuously. How the
clock is used depends on your application program.
For example, the PTC can use the clock to show the
date and time on its screen or to time-stamp a file.

Internal heater (freezer units only)

The PTC-870IM's built-in heater turns itself on and
off automatically to prevent frost and condensation
from building up on the PTC's screen. A sensor on the
display screen detects the surrounding temperature
and turns the heater on or off accordingly.
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