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The Internet Archive’s Calculator Drawer lets you relive high school math class. The oldest calculator in the database dates back to 1989.
One of the very first handheld calculator prototypes, created by Texas Instruments back in the mid-’60s.
The SwissMicros DM41X is a faithful homage to the legendary HP-41CX, one of the most versatile calculators ever created.
To discourage cheating, schools limit what gadgets can be brought into an exam, and students have to use very basic calculators if maths is involved. But that doesn’t mean cheating is impossible, it just requires more effort.
Before standalone electronic calculators did exist, mathematicians and engineers had to suffice with a confusing mechanical device called the slide rule. But don’t worry, this watch is much easier to use.