Processor Board Component Characteristics And Specifications - Unitech MR350 MKII Technical Reference Manual

2.6.2. Processor Board Component Characteristics and Specifications

Component Side
(1) Processor
A 16-bit Intel 80188 instruction compatible microprocessor running at 8
MHz and a Real Time Clock (RTC) chip.
(2) User Memory
A standard 128KByte CMOS static RAM is provided to be used as a
RAM disc and program execution area. The size of the RAM disc and
execution area can be adjusted in supervisor mode to meet your
requirements.
A 256KByte or 512Kbyte of RAM can be ordered to allow more
sophisticated application programs.
(3) Buzzer
The terminal? internal buzzer sounds after the keypad or scanner input
is accepted. This audible buzzer can be programmed or controlled by the
application program via DOS function calls or built-in supervisor mode.
Buzzer characteristics:
Piezoelectric buzzer, 100db @ 10cm.
(4) LCD module connector
This 14-pin inline connector is used to connect the to 2-line by
16-character LCD module.
(5) Flash ROM
A 256KB Flash ROM is divided into two 128KB area. One 128KB is
stored DOS-based system include all of BIOS/DOS function call and
decoder. Other 128KB can be used to stored application program.
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