When is a pocket calculator more than just a calculator? [Andrew Menadue] has been pushing the limits of his 1970s Casio FX-502P by adding all sorts of modern functionality via the calculator’s ...

Scientific calculators are an amazing invention that take pocket calculators from being merely basic arithmetic machines to being pocket computers that can handle everything from statistics to algebra ...

Quartz movement 1/100 second digital stopwatch; measuring modes: elapsed time, split time, 1st-2nd place times Hourly time signal; calendar (pre-programmed until the year 2029); 12and 24 hour formats ...