Terminated: unknown
According to this Vintage Calculators page site (link valid 2023-04-08) this calculator is actually a clone of the CASIO fx-10 calculator, CASIO's very first hand-held scientific calculator, with 10 functions, hence the name fx-10.
It is a calculator with some very peculiar features:
- It has a lower-case zero, making results with zero's in them very difficult to read but really cool looking.
- When an error occurs, the display is filled with 8 lowercase zeroes.
- The natural logarithmic functions has its accompanying exponent, the 10-log does not.
- The "="-key can be used to repeat the last calculation.
- There is a 'an'-key to calculate powers. It only accepts single digit exponents and displays its result immediately after pressing a number key.
- The calculator has no issues with roots and logharithms of negative numbers, it completely ignores the minus.
- The calculator has an 8-digit accuracy. The scientific functions however display their results with 6-digit accuracy.
- Even though there is a 'π'-key, the trigonometric functions always calculate in degrees.
- The largest number this scientific calculator can display is "99999999".
- When performing a calculation, the display shows that the calculator is really busy calculating, showing all sorts of intermediate results. This together with the lower-case zero makes this calculator look really technical and nerdy.
- A nice detail, all four batteries are facing the same way.