DATAMATH CALCULATOR MUSEUM |
Additional Pictures
The backside of the SR-40 Prototype with the Serial Number 0000030. |
The printed circuit board
(PCB) of the SR-40 is similar to the later SR-16
II. Please notice the different arrangement of the battery contacts, the TMS1111 single-chip calculator circuit and the small coil of the power supply. |
Close-up view of the TMS1111 single-chip calculator circuit. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, March 13, 2013. No reprints without written permission.