<P> A calculator watch is a digital watch with a built in calculator , usually including buttons on the watch face . Calculator watches were first introduced in the 1970s and continue to be produced , despite falling from their peak popularity during the 1980s . The most notable brand is the Casio Databank series , though watches made by Timex were also popular . </P>
<P> A calculator watch is a digital watch with a built in calculator , usually including buttons on the watch face . Calculator watches were first introduced in the 1970s and continue to be produced , despite falling from their peak popularity during the 1980s . The most notable brand is the Casio Databank series , though watches made by Timex were also popular . </P>
when did the casio calculator watch come out
when did the casio calculator watch come out
1970s
1970s