You can control the programmable oscillator circuit in Figure 1 via an IBM-compatible PC's parallel port, which also provides power to the circuit. Resistors R 1 and R 2 limit power-supply current ...

I have recently learned a little bit of Visual Basic. I came up with an idea just a few minutes ago about a circuit that i could build that plugs into the parallel port that would control the ...

So I'm trying to detect through Visual Basic 6.0 when a voltage change occurs on one of the pins of the serial/parallel port. The whole thing is pretty simple; no data transfer/handshaking/etc ...

Designers may program the CPLD with any industrial parallel CPLD programmer, but the best method is to use the in-system reprogramming (ISR) feature. J1 is a JTAG port designed for this purpose.

How To Build Parallel Port Prototypes @ Hardware Secrets "The computer parallel port is the easiest way to control devices outside the PC, like LEDs, lights and even home appliances.

The standard parallel port provides 12 logic outputs and five inputs. Furthermore, software design is simple because the PC parallel port is easy to program using either C or Basic. 1 ...

All PCs have a parallel port, and very useful it is too. On the vast majority of computers this 25-pin socket is used by the printer, however in recent years a growing number of other devices have ...