DATAMATH CALCULATOR MUSEUM
|The TI-2550 II sports two
||The later TI-2550 III misses one
of the switches.
|The printed circit board (PCB) of the
uses the TMS1071 single-chip calculator circuit
and a discrete power supply.
|The later TI-2550 III with the
cheaper TMS1043 driving
the Vacuum Fluorescent Display directly and an
additional DC/DC converter running from 1.2 Volt.
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© Joerg Woerner, March 26, 2003. No reprints without written permission.