DB (D-Sub) Connectors and COM Ports A serial port on a PC is a male 9-pin connector (DE-9 D-sub). Early PCs had two 9-pin connectors or one 9-pin and one 25-pin (DB-25). On a PC, serial ports are ...

Why lug around your PC when you can make your own External ... While it doesn’t have a keyboard port like this microcontroller based serial terminal, tact switches allow access to the user ...

What to do when you have a legacy serial device, but no serial port on the computer you want to connect? [vahidyou] designed a wireless serial dongle to solve this conundrum. Faced with a CNC that ...

The simulation of a serial port in software in order to allow USB, Ethernet or some other input/output port to take its place. Virtual serial ports are necessary to enable an application that was ...

The serial port RS-232 sends only 1 bit at a time. However, it is multidirectional. So it can send 1 bit and receive 1 bit at a time. Parallel ports are mainly meant for connecting the printer to the ...

PCMCIA serial adapter cards provide one or more serial ports to a host computer. They use a PCMCIA card bus to interface with the host, and add RS232, RS422, RS485, or other types of serial ports.