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4-9
PRINTER CIRCUIT
At
the
first,
CPU drives
DC motor
through
STA301,
the
timing
signal
CP and RP is generated from the ptinter
to CPU for appling
information
of
the
any
character
position.
The TR converts
the analog
timing
signal
to the digital
signal.
When
the signal
of desirable
position
is detected,
CPU activates
the
appropriate
Hammer
Solenoid
through
the ULN2003A,
then
meaningful
information
will
be printed on the paper.
CPU
8032
INTO
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