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 !

hp 45Model: HP-45
Battery: 
Adapter: 
Year: 1973
Chip:
Info: The HP-45 is the second scientific pocket calculator introduced by Hewlett-Packard, adding to the features of the HP-35. It was introduced in 1973 with an MSRP of US$395 (equivalent to $2,411 in 2021). Especially noteworthy was its pioneering addition of a shift key that gave other keys alternate functions.

 WIkepedia HP-45