Remember those Casio scientific calculator watches? Yeah, yeah . . . we got roughed up for wearing one too. Anyway, engineer David Jones is launching a DIY site for building one using ...

It says a lot about me, I suppose, but when I was younger I thought a calculator-watch was possibly the coolest thing you could have on your wrist. Pro-electronics engineer David Jones obviously feels ...

Some of the greatest electronic calculators of all time, including the venerable HP-16C, included functionality to convert numbers between different bases. 3735928559 might not mean much in base 10, ...

If you like Nixie tubes and/or DIY calculators, checkout this interesting talk from the HP Handheld Conference in Orlando last month by [Eric Smith] from Brouhaha and [John Doran] from Time Fracture.

What do you do when your trusty, 45 year old calculator finally needs to be retired? If you’re a programmer with a knack for making things — like Simon Boak — you custom build a replacement. This is ...

Good grief – where does the time go? For months and months (and months) I've been meaning to write an incredibly interesting paper on Binary Coded Decimal (BCD). The strange thing is that a lot of ...

If you thought the original calculator watch was nerdy, get a load of this DIY gem from designer David Jones. According to his website, the “uWatch” is the “world’s most powerful programmable ...