DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
| The side
view
of the Western Auto electronic Wizard aka 4993 (top) shows the changed mold for the display frame compared to the Exactra line.  |
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| The "woody"
name plate of the Western Auto electronic Wizard.
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| The Western Auto electronic Wizard
with an unknown display construction.
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This Exactra 23 uses a LED display
manufactured by Bowmar, better known as Opto-Stick.
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| The printed circuit board (PCB)
of the M4993 with the TMS0803 single-chip calculator circuit and one additional display driver plus transistors.
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The printed circuit board of the Exactra 23 is 100% identical with the Western Auto electronic Wizard aka M4993.
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If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, March 5, 2006. No reprints without written permission.
