Building a Calculator From Scratch
When you need to make a quick calculation, chances are that you’d reach for your phone or open an application on your desktop computer. In this day and age, it’s less likely that you’d use a dedicated calculator. And there is almost no chance that you’d design your own calculator hardware to have on hand for these situations.
But that’s exactly what hardware hacker Goran Devic did. That is certainly not the most efficient way to calculate a sum, but that’s not the point of a project like this. Devic’s goal was to design and build a calculator that operates in a similar way to those produced by HP in the 1970s for educational purposes. He built it completely from scratch, designing even the CPU that the calculator runs on. And fortunately for us, Devic documented the entire build in great detail.
The Altera Cyclone II FPGA (📷: Goran Devic)
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