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|  MIL-C-70491(AR)
3.
REQUIREMENTS
3.1 Item definition. The display/rocessor circuit card
assembly provides the Mortar Ballistic Computer (MBC) with the
following:
An 8 bit CMOS microprocessor.
a.
2048 8-bit words of CMOS Random Access Memory (RAM).
b.
16 384 8-bit words of Erasable Programmable Read Only
Memory (EPROM).
Interface circuitry for the keyboard and power supply.
d.
A vacuum fluorescent display and interface circuitry.
e.
System timing clocks.
f.
The EPROM is located functionally between hexi.decimal addresses
0000 and 3FFF and is board programmable thru' connector P1. The
RAM is located functionally between hexideci.mal addresses F800 and
FFFF. The major hardware functions for the display\processor
circuit card assembly are shown i.n Figure 1 and the connector
contacts are listed in Table 1.
3
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