DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
The
sales box of the Bowmar Brainchild MX20 sold
around 1974 in the US.
  |
This Bowmar MX20
(90911) with Serial Number 195197 was manufactured
in March 1974 in Mexico.  |
The Bowmar MX20 is powered by
three disposable AA-sozed Volts batteries. |
| The printed
circuit board (PCB) of the Bowmar MX20 is centered
around a TMS0801 single-chip calculator circuit and supported by four display driver chips.    |
Close-up view
of the TMS0801 single-chip calculator circuit.  |
Close-up view of the ITT B 6248 Digit Driver. |
Close-up view of the
Bowmar Optostic R7H-112-9A Module of a MX20
manufactured in March 1974. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, September 6, 2022. No reprints without written permission.