Nothing slows down a DIY faster than some complex math, and nothing can speed it along like these tools, tech, and tips that ...

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.

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 ...

What if your calculator could do more than crunch numbers? Imagine a pocket-sized device that not only solves equations but also doubles as a retro gaming console, a basic computer, and a platform for ...

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.

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 ...

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 ...

Building a mechanical calculator for multiplication: DIY to CNC precision! Posted: February 2, 2026 | Last updated: February 2, 2026 Watch as a frustrating math problem inspires a creative journey ...

Hoboken, NJ, September 19, 2005 – Global publisher John Wiley & Sons, Inc., today announced the publication of the new book, "The Definitive Guide to How Computers Do Math: Featuring the Virtual DIY ...