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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
This SR-51-II (Version 1) was manufactured
in September 1976 by
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The battery
compartment of the SR-51-II with its Battery Pack BP6 removed.
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The rear part of the
housing showing the MAJESTIC MOLD description.![]() |
The SR-51-II with the
rear part of its housing removed.
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The compact assembly of
the SR-51-II with three printed circuit boards (PCBs)
and many interconnections.
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The
calculator module with the keyboard assembly and
power switch removed..![]() |
The
calculator module with the power supply removed.![]() |
The
Main-PCB with centered around the TMS0500 Building Blocks and two display
drivers.![]() |
Close-up
view of the TMC0501E Enhanced Arithmetic Chip.
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Close-up
view of the TMC0581 Double Scanning and Read-Only Memory Chip.
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Close-up
view of one of the two SN27882 Display Driver Chips.
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Close-up
view of the 12-digit DIS273D LED Display with magnifying lens.![]() ![]() |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 20, 2023. No reprints without written permission.