回視聴
0:41
Soft Pouch for HP12C
0:41
HP15C
1:34
HP-65 and HP-67 performing user diagnostic program
1:52
HP 11C with very low serial number (2145A)
43:34
Hewlett Packard 97 S I/O Calculator Part 1
1:59
HP67 Unity Demo
1:49
HP 42S Scientific RPN Calculator and the solver function
2:18
HP 15C Put to complete test (2428A)
