What is a parallel port controller?
If it has a parallel port, you can use it to control your electronic gadgets. Today, most printers connect to computers via USB ports. The parallel port has one advantage over USB ports: It makes it easy to create your own circuits that interface directly with the port.
What is parallel port interfacing?
The PC Parallel Port is commonly used to create an interface between a computer and an external piece of hardware. Found on the back of a PC, the parallel port is a D-Type 25 Pin Female Connector. The parallel port is capable of receiving 9 bits of data or transmitting 12 bits of data, at any given time.
Is parallel port still used?
Current use For consumers, USB and computer networks have replaced the parallel printer port, for connections both to printers and to other devices. Many manufacturers of personal computers and laptops consider parallel to be a legacy port and no longer include the parallel interface.
What is the difference between serial port and parallel port?
The main difference between a serial port and a parallel port is that a serial port transmits data one bit after another, while a parallel port transmits all 8 bits of a byte in parallel. Computers have both serial and parallel ports along with newer technology called a USB (Universal Serial Bus) port.
What can you do with a parallel port?
If it has a parallel port, you can use it to control your electronic gadgets. Until a few years ago, all computers came equipped with a parallel port, which was used mostly to connect to a printer. Today, most printers connect to computers via USB ports.
How many pins are in a parallel port?
A standard parallel port has eight data pins, which are essentially TTL logic outputs, with +5 V HIGH representing 1 and 0 V LOW representing 0. In fact, the first parallel printer ports designed for the IBM PC back in 1980 actually used 7400-series logic chips.
Can a printer connect to a parallel port?
Until a few years ago, all computers came equipped with a parallel port, which was used mostly to connect to a printer. Today, most printers connect to computers via USB ports. The parallel port has one advantage over USB ports: It makes it easy to create your own circuits that interface directly with the port.
How does a parallel port fan drive a MOSFET?
The 10V pulses could drive the gate of a 2n7000 MOSFET, source connected to 0V. The connect the drain to one of the parallel port input pins with a pull-up resistor to +5V, perhaps 4.7k. Tach outputs from an internal hall sensor almost always are an open collector output in the sensor pulled up to the fan operating voltage for 12 V fans.