An interesting note about the crappy calculator is that its case design is that of an old Casio fx-82LB calculator.
http://www.casio-calculator.com/Museum/Pages/FFF/FX-82LB/Casio%20FX-82LB.htmlhttp://www.calculator.org/pages/calculator.aspx?model=fx-82LB&make=CasioI guess they either re-purposed the original molds or used a Casio fx-82LB calculator as a model for them. They removed the two centre keys on the top row, and the key layout and actual operation is different than the original, so the electronics are different. Also, I think they improved it by adding a removable cover for the batteries (2 x AA as with the original). With the original you had to remove screws and the entire back to change the batteries.
The reason I know about the case is because I bought one, also from a dollar store in Ontario, Canada. However, the label above the display, that reads "
Scientific Calculator" on Dave's, on mine reads "
fx-82LB FRACTION", in the same fonts as the original, but with the word "CASIO" removed and the word "FRACTION" in white instead of blue. Mine came with a hinged hard plastic cover attached, which flips around to the back for use, as the original Casio fx-82LB had. I suspect the one Dave received also originally had the same cover (They tend to break off easily).
What I found funny about mine is that it doesn't actually have the capability to work with fractions.
P.S. The Ontario city Mississauga is generally pronounced miss iss
saw guh.