[Mike Lu] likes to add serial ports to his routers to use for debugging but he didn’t want to drill holes in his new RT-N12. After a bit of head-scratching he thought about repurposing the four unused ...

Your friend is mistaken. This serial port he is talking about is called "CGA" and closely resembles a serial port. However it still requires a graphics card and a monitor! You can convert a CGA signal ...

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 microchip PIC microcontroller incorporates an I2C interface on one side using bit-banging on a 12F675 device and an RS232 serial interface on the other. The RS232 in this device refers to ...

I know, RS-232 is not gone completely but in most things it has disappeared. Recently I bought a new laptop to use in my ham shack. I have several older accessories that use RS-232 and I had hoped to ...

Although serial port connections have been replaced by USB ports in most computers, older business equipment such as fax machines and printers may still utilize them. When a serial port stops ...

If you've been using computers for more than a couple of decades, you've probably used a serial port to attach peripherals like your mouse and modem. Until the USB standard rendered them obsolete in ...

This application note describes the operation of a general- purpose, microcontroller-based Serial Port Interface (SPI) boot circuit. This is a low cost solution for users who need to modify some of ...

Before 2000, desktop printers for business had one of two interfaces: serial and parallel. The type of interface dictated the type of cable you used to connect the printer to the PC and how fast the ...

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 ...