[sdiy] math question - somewhat OT

[J. Larry Hendry]

I feel old.  In 1975 or 1976 when the price dropped from $300 to $150, I
just had to have one.  I still own it.  How long since it has been turned
on.  I cannot even remember.
Larry H


> I'm just young enough that "slide rule calculators" were affordable by
> the time I took Trig. I remember that a decent TI cost about $50 in
> 1978 or 79.
>
> Look at incredible the price drop from 1975...
> http://www.datamath.org/Sci/WEDGE/sr-51a.htm
>
> ... to 1976:
> http://www.datamath.org/Sci/MAJESTIC/sr-51-II.htm
>
> In 1977 it finally became programmable!
> http://www.datamath.org/Sci/MAJESTIC/TI-55.htm