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.

The circuit in Fig 1 loads 4 address bits and 8 data bits into IC 8 's 8-bit octal, two-quadrant multiplying DAC from a PC parallel port. Initially, the circuit loads the desired data on the D 0 ...

The adapter consists of the SN76489, hooked up to the parallel port so that it can be addressed by the host computer via a DOS Terminate and Stay Resident program acting as a driver.

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 ...