Many laser printers last for years, so businesses often keep older laser printers around even after upgrading other hardware. Many older laser printers use a parallel port interface rather than the ...

Before USB standardized how we connect devices, computers were a tangle of incompatible ports. Here are the ones that USB ...

Any peripheral component can be controlled by the 25-pin parallel port by assigning a high & low or ON & OFF state to each pin. During the design of the project, a Super Nintendo Entertainment System ...

It is a great shame that back in the days when a typical home computer had easy low-level hardware access that is absent from today’s machines, the cost of taking advantage of it was so high.

The 24-bit I/O card project has been designed to function with parallel/printer port of an Amiga or computer using the Intel 82C55 I/O chip. The design of the device contains read & write strobe, a ...

An earlier printer that used the parallel port for a cabled connection to a computer. Today, there are no parallel ports on computers or printers. Either the printer is cabled to the computer via USB ...

I have been working with computers since the late 70s, and that's not for boasting purposes, but to tell you where I come from. When I started, I was always told to NEVER plug/unplug the following ...

???<BR><BR>I have a propriatery RS232 device that I need to connect to a computer that has no serial ports (newer laptop). The hardware has a dongle incorporated into the cable to unlock the software ...