Terminated: unknown
It is an 8-digit calculator with a 9-digit fluorescent display. It has a sturdy case that is very nice to hold.
It has the four basic functions, percentages, the square root and some nice extras:
- The 1/x key to find the reciproque value of a number.
- x2 for squaring numbers.
- The π key for the mathematical constant.
- Bracket keys ( and ) for one level of bracketing depth.
- The +/- key for changing the sign of a number.
The leftmost digit is also used to indicate negative values and a non-zero value in memory, shown as an upside down "u" using the three top segments.
When there is both a non-zero value in memory and a negative number on display this turns into a small "o".
Combine that with an error and the resulting symbol looks like the mirror image of a "9". So, just for fun, to light up all segments but one simply enter 88888888 and type +/- M+ × 1 0 =.
When I obtained this calculator it still had its plastic protective foil, which I had to remove to make a scan.