How to Connect a Newton (Really!) to a Modern Mac
Writer and developer Matt Gemmell has detailed how to connect an Apple Newton to a contemporary Mac running OS X 10.8 Mountain Lion. Sold by Apple from 1993 until 1998, the Newton was a groundbreaking handheld device that featured handwriting recognition but wasn’t commercially successful. If you have an old Newton kicking around, Gemmell advises acquiring the software and hardware required to connect it to your computer now, as it’s likely to become harder to obtain in the future. And if you’re just Newton-curious, Gemmell discusses some Newton emulators with which you can experiment.
Instead of the Keyspan USA-19HS adapter and a Windows/Newton serial cable, you can use the Keyspan USA-28XG that has 2 Mac Serial Ports on it and use a Mac mini-Din 8 serial cable.