Casio fx-61F

[Csaba Tizedes]

There is no linear regression. A scientific model without linear regression... I want to say something about it, but I don't want to banned myself.

The most closed and well designed blind programmable from 80's is the fx-50F. There are

• constants
• 23 built-in scientific formula
• programmable (2 programs)
• programs can use other MODEs (like SD, LR, Base-n)
• ALPHA input
• form factor is superb (thin and small)
• solar cell
• after 40 years works well
  

Cs.