DATAMATH CALCULATOR MUSEUM |
Additional Pictures
This
early TI-57 II manufactured in Taiwan hides the Secondary microcomputer and makes use of a rigid PCB. |
The TP0456 microcomputer
based Primary-Secondary architecture found in the TI-57 II calculator. The CD4572 is the Primary chip, the smaller CD4555 the Secondary chip. |
The TI-53 calculator
makes use of the original TP0323
microcomputer introduced already in 1978. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, June 13, 2003. No reprints without written permission.