[Craig] cracked open a multimeter to unlock RS232 serial communications that can be used for data logging. There’s a couple of things that make this possible. First of all, the multimeter’s ...

And if you were to go back a few more years into the past, you’d have found when you bought a mouse with a PS/2 connector fitted, it may well have come with an adapter for a 9-pin RS232 serial port.

Its proprietary T-shaped hinge allows the screen to rotate up to 180 degrees, enabling it to be used as a tablet. The Pocket ... customize it to your needs. An RS232 port is available for $14 ...