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Additional Pictures 

 

This TI-74 BASICALC was manufactured in June 1987 by Inventec Corporations in Taiwan (Date code I-0687 mth 06 yr 1987).

The TI-74 BASICALC dismantled.

The TMC70009 8-bit microcontroller of the TI-74 BASICALC.

The Hitachi HN61256 ROM with 32k Bytes capacity.

The Hitachi HM6264 RAM with 8k Bytes capacity.

The TI-74S makes use of identical hardware. 
Please notice the designations on the two printed circuit boards.


horizontal rule

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

Joerg Woerner, January 6, 2011. No reprints without written permission.