The "serial" part of the serial port's name describes how data is transmitted one bit at a time in a single line or "series." There were also parallel ports on computers that sent multiple bits ...

A PC’s serial port provides signal lines that you can use to read voltage levels of digital circuits. You can use the port to test digital TTL (transistor-to-transistor-logic)-level circuits. You just ...

With Linux and the serial port there is good news and there is bad news. The good news is that Linux has great support for serial hardware of all sorts and a host of tools for accessing the serial … ...

An image from H.D. Moore's presentation on serial server security vulnerabilities, showing an oil and gas infrastructure setup networked with serial port connections. (Click to enlarge.) You ...

Reminiscent of the serial terminal access controllers that were found in dumb terminal sites back in the day, it’s a box with eight DB-9 connectors for serial ports and a single RJ45 Ethernet port.