and
MS
2
contains
a
parallel Cen@onics
type printer interface. Lines axe buffed
via
circuit 74LS241 (Octal
lines have protection diodes (D4 and
D5)
to
nrotectT7Z-circuits D2 andD3 (74LS241Lif
somebody connects the parallel and serial
interface across.
Circuit Dl
(8255,
programmable peripheral
interface)
is
an input/output controller.
Connector X2 is 25-poles D-connector from
See Figure
3-1
and Table 3-1 for signal
description.
Figure 3-1
ANUAL
Document Release Section Page
451/352-100-X
2.0
3
5
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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