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.
Texas Instruments educational calculator.
Hardware description and pinout
LCD with Professor segments pins 27 and 9
LCD with Professor segments pins 13 and 9
LCD with Professor segments pins 14 and 9
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
0456-56 full die shot top metal
0456-56 full die shot after acid
Texas Instruments calculator.
Hardware description and pinout
full die shot with top metal removed
ROM array with top metal removed
Texas Instruments calculator.
Hardware description and pinout
full die shot with top metal removed
ROM array with top metal removed
Texas Instruments calculator.
Hardware description and pinout
full die shot with top metal removed
ROM array with top metal removed
Texas Instruments educational calculator.
Hardware description and pinout
ROM array with top metal removed
