|Batteries:||LR 44 x 2|
Introduced: ca. 1978
Plain calculator with a square root function and memory.
As visible on the calculator's picture, there's only an "MR"-key. That's because the "+"-key acts as an "M+="-key. The "AC"-key clears the memory.
Also noteworthy is the fact that the display shows the operator in action.
The calculator automatically shuts off after an idle period.
The calculator claims that √-9 = -3.
©2009 Ernst Mulder