YouTube

 

TI 35Model: TI-35 black
Battery: 2 x LR44
Adapter: 
Year: 1981 Price: L. 35.00 + iva 14%
Chip:  TPO324
Info: From an advertisement of the time! The most ready. The TI-35 scientific calculator is more responsive because it has "constant" memory. To keep the contents unchanged, even when the calculator is turned off, restart the calculations in due course. SOA (algebraic operating system): 54 functions, algebraic, logarithmic, trigonometric and statistical, ultra-flat with very long life batteries, energy saving device!