Also known as an RS-232 port, serial ports provide very slow speeds and have been superseded by USB on desktop computers. USB-to-serial adapters are available for old peripherals. DB (D-Sub ...

He’s created a PS/2 to RS232 mouse converter ... machines from that era that came with proprietary interfaces, maybe you can make use of a USB to quadrature converter.

This design idea uses asynchronous RS232 to power and count pulses from a simple 10 kHz voltage-to-frequency converter.

This port powered device connects to any 2.0 USB Port through the supplied cable. The module provides an RS-232 output including DTR and a simultaneous RS-485 4 wire output. This module is protocol ...

The Organiser II, with its brand-new USB interface One of those enthusiasts ... Although a “CommsLink” module providing an RS-232 port was available back in the day, it’s become hard to ...