| TI-57 USA - 1977 Scientific, Programmable Magnetic strip Red Led |
 |
| "TI-57
Programmable 4177 USA 6530075 - A
real innovation, used a one-chip design for a real programmable
calculator (50 merged program steps). From the view of complexity a
step between the SR-51-II and the TI-55."
Joerg Woerner |
|