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 ...

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.

One common use of UART is for remote computer communication over long distances, up to 900 meters. Another common use of UART is for transferring data through a PC serial port.

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 ...

Then you set the serial communications to the old-reliable standard: 9600 baud, 8 data bits, no parity, and 1 stop bit, no flow control.

For measurement applications that require several RS-232, RS-422, or RS-485 ports, use the SeaLINK-USB+8 family of converters from Sealevel Systems to connect up to eight serial ports to a PC through ...

The device consists of two USB Communication Device Class, or CDC chips, creating a USB serial port for each attached computer. The TX and RX lines are cross-connected to allow communication ...

He needed a way to snoop on the back and forth serial communications. Since he didn’t have a specialized tool for this task, [Piotr] ended up building his own. The setup is pretty simple.