DATAMATH CALCULATOR MUSEUM
|
|
DATAMATH CALCULATOR MUSEUM |
Additional Pictures
| This
Brother PROCAL 408AY (Version 2)
was
manufactured in Japan in January 1974.
|
| The Brother PROCAL 408AY (Version 2) calculator is
powered by 4 AA-size batteries.
|
The inside view
of the PROCAL 408AY calculator with the housing removed. |
| The printed circuit board (PCB) of the
PROCAL 408AY calculator is centered around a NEC µPD273 single-chip calculator circuit.  |
Close-up view
of the NEC µPD273 single-chip calculator circuit. |
The Display PCB of the PROCAL 408AY
calculator with the ISE Electronics DP90A VFD.  |
Close-up view of parts from the
capacitive keyboard assembly. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, April 18, 2025. No reprints without written permission.
