Symbol PTC-2124, Руководство пользователя

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Chapter 3 Configuring TN-3270/5250
10 PTC-2124 User’s Guide
Operating system/environment
The PTC-2124 uses the MS-DOS 6.22 or Windows CE
2.12 operating system. PenRight!, a separate pen
operating environment that may run on top of the
operating system, allows the PTC to recognize touches
as well as written letters and numbers.
Memory
The PTC-2124 has two types of memory: read-only
memory (ROM) and random access memory (RAM).
ROM
The PTC-2124 comes with 512 kilobytes (KB) of read-
only memory. It is used to store the PTC’s Basic
Input/Output System (BIOS).
RAM
The PTC-2124 can be ordered with 4, 20, 36, or 64
megabytes (MB) of random access memory.
RAM is used to store data that the PTC needs while it
is running. One MB of RAM is reserved for running
the operating system and your application. The
remaining RAM may be used by the pen-operating
environment or by some applications.
Refer to Chapter 15 for information
on resetting the PTC. Data stored in RAM can be easily read, written, and
changed. It is also volatile. All data in RAM will be
lost if the PTC’s battery pack and bridge battery run
out of power or if the PTC is rebooted or reset.
Refer to the section titled "Advanced
power management" on page 17 for
information on the PTC’s APM
feature. During normal operation, the PTC’s advanced power
management (APM) feature automatically saves data
in RAM and saves your place in the application.