DATAMATH CALCULATOR MUSEUM
|The second series of the
TI-81 uses a huge
Printed Circuit Board (PCB) with three
|The third series of the
TI-81 got a
revised display driver attached directly
to a flexible board with very thin traces.
series of the TI-81 combined an
application specific Z80 CPU with one
external RAM and one ROM.
series of the TI-81 replaced
the application specific CPU with a
standard Z80 CPU and an ASIC.
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© Joerg Woerner, January 19, 2003. No reprints without written permission.