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Additional Pictures 

 

The printed circuit board (PCB) of the Galaxy 10 looks familiar to us. Please notice
the unfamiliar coding of the single-chip calculator circuit.

The printed circuit board (PCB) of the Galaxy Junior is identical. The only difference is the
missing resistor to select the "TI-10" or "Junior" software in the calculator chip. 

The IC of the Galaxy 10 with
the unusual 1110484-0002
part number.

              

 

An identical part number was
found in the early production
Galaxy Junior.

Later Galaxy Junior with the
more common CD4816
designation.

The internal construction of this late TI-30 Galaxy manufactured in Italy is identical
with the Galaxy 10 shown above. The calculator circuit is a CD4808. 


horizontal rule

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

Joerg Woerner, June 12, 2004. No reprints without written permission.