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I
CONTROL CIRCUIT BLOCK DIAGRAM
Parallel
Data
Parallel
In'ertace
Block
1'"'-------,
,
,
,
,
,
,
,
I
rr-=-:-~
-., I
l
ROM 14K)
I
:
I
~---------~
I
L~_~
CPU
~i---
r-t.-
I
~
L..----T----~
,
I
:
I
I
I
r----R:;---l
:
(4KI8K)
:
L. _________ .J
4K 18K Buffer
,
~_J
Serial...!
Serial
:
Data
:
Intertace
:
,
~rd::tio~
,
Board
1- ___________________ "
,
(optional!
,
,
,
,
I
,
,
L.. _______
..1
ROM
18K)
ROM
(4K)
Control
CPU
RAM
12K)
Timer
Print head
Carriage molor
Paper leed motor
Operation panel
Detectors
DIP sWitches
241
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