If you have the opportunity to support those who work for free, in this non-profit museum, and with the aim of opening a museum in the city of Rieti dedicated to Texas Instruments. DONATE !

BA 45Model: BA-45 mcro business manager
Battery: 4 x AAA                
Adapter: 
Year: 1984
Chip: nec UPD7503
Info:  later HANDHELD printing   made in Japan scientific