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Additional Pictures 

 

This TI-2550-IV was manufactured in February 1979 
by Texas Instruments in Italy (week 08 year 1979).

The printed circit board (PCB) of the TI-2550-IV shows just
the VF-Display and keyboard.

The backside of the PCB sports a clean layout but hosts
three different Integrated Circuits.

The three Integrated Circuits (ICs):
TMC1981, TMC0999 and BP51C.


If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, June 3, 2009. No reprints without written permission.