Before USB ports became standard on PCs, several devices connected through a serial port. They're obsolete in many ways, but they still see some use.

Up to four modules can be installed in one groov EPIC chassis, providing a total of 16 serial ports to support communication requirements. Each port is selectable for RS-232C or RS-485 mode, with ...

Today, everything from your computer to your dryer has wireless communications built in, but devices weren’t always so unencumbered by wires. What to do when you have a legacy serial device, … ...

The Serial Port Profile (SPP) is based on the RFCOMM (Radio Frequency Communications) protocol that emulates RS-232 serial ports. It defines how to set up virtual serial ports between two devices ...

Virtual serial ports look like exactly as real hardware serial ports for communications applications. Virtual Serial Port Control is a powerful ActiveX control.

Serial communications program opens COM port alias but actually works with specified physical COM port. Additional console utility allows to control Serial Port Mapper via command-line interface.

He recently picked up some Motorola c168i cellphones from eBay. It turns out there is a serial port that uses TTL communication with a standard head-phone jack as an interface.

The simple method described here evaluates a one-wire device that uses pulse-width-encoded communications from a PC serial port. Communications errors such as parity and acknowledge are monitored ...