DATAMATH CALCULATOR MUSEUM |
Additional Pictures
This SR-51A (Version 1) was manufactured
in November 1975 by
|
The battery compartment of the SR-51A. |
The Main printed circuit
board (PCB) of the SR-51A calculator is centered around the TMC0501 and TMC0522/0523 chips supported by many discrete components. |
The rear
side of the SR-51A PCB with the Display Module and
Keyboard assembly. |
Close-up
view of the TMC0501 Arithmetic Chip.
|
Close-up
view of the TMC0522/TMC0523 Scanning and Read-Only Memory Chips.
|
Close-up
view of the TMC0522/TMC0523 SCOM Chips from
another SR-51.
|
Close-up view of the SN96239 Clock Generator Chip. |
Close-up view of the TP4011A Clock Driver Chip. |
Close-up
view of one of the two SN27882 Display Driver Chips.
|
Close-up of the 14-digit DIS234G LED Display with
magnifying lens. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, January 6, 2024. No reprints without written permission.