Brand: | Casio |
Model: | COLLEGE fx-80 |
Type: | Scientific calculator |
Picture: | |
Batteries: | AA x 2 |
Lifetime: |
Introduced: unknown Terminated: unknown |
Notes: |
Predecessor of the Casio
fx-82 and all its descendants. The standard of high school
calculators when I was still in high school. This one, together with the
Casio fx-81 were actually the most popular calculators when I myself was still
in high school. The Casio fx-81 was the cheeper one because it officially
doesn't support statistical functions. That was a little trick of
Casio because these two calculators were basically the same. To enter the
statistical mode on the Casio fx-80 one has to press "INV"
"D·R·G". When these keys are pressed on the Casio
fx-81 (I am still looking for one!) the display shows "ERROR" at the
position where the Casio fx-81 shows "sd". However, all statistical
functions are there, it's just a matter of remembering the Casio fx-80's
key layout! The "ERROR" notification is just there to scare you. I was quite
surprised when I found out at the time.
This calculator (as do many other Casio scientific calculators) uses one and the same key for both the constant π as well as exponents. This works as follows. When you first enter digits, the "EXP"-key will enable you to enter the numbers exponent, otherwise it will enter the constant π. It is a robust and solid calculator for school usage. The fact that it uses ordinary (AA) batteries that can last for years is also a big advantage. |
©2023 Ernst Mulder