TP-0456


The TP-0456 is an LCD-drive version of the TMS-1000. It was used in the 1982 Little Professor educational calculator and many other calculators and educational toys.


Little Professor (1982)

Texas Instruments educational calculator.

Hardware description and pinout

full die shot top metal

full die shot after acid

ROM array top metal

ROM array after acid

raw ROM dump

ROM dump in TMS1000 order

LCD with all segments on

LCD with Professor segments pins 27 and 9

LCD with Professor segments pins 13 and 9

LCD with Professor segments pins 14 and 9


TI-55-II

Texas Instruments calculator. It has 2 chips: 0456-55 and 0456-56.

Hardware description and pinout

0456-55 full die shot top metal

0456-55 full die shot after acid

0456-55 ROM array after acid

0456-55 raw ROM dump

0456-56 full die shot top metal

0456-56 full die shot after acid

0456-56 ROM array after acid

0456-56 raw ROM dump


TI-35

Texas Instruments calculator.

Hardware description and pinout

full die shot top metal

ROM array top metal

full die shot with top metal removed

ROM array with top metal removed

raw ROM dump


TI-30 III

Texas Instruments calculator.

Hardware description and pinout

full die shot top metal

ROM array top metal

full die shot with top metal removed

ROM array with top metal removed

raw ROM dump


BA-35

Texas Instruments calculator.

Hardware description and pinout

full die shot top metal

ROM array top metal

full die shot with top metal removed

ROM array with top metal removed

raw ROM dump


Math Star

Texas Instruments educational calculator.

Hardware description and pinout

die shots

ROM array top metal

ROM array with top metal removed

raw ROM dump

LCD segments


back to Decap page

back to Home page