Most newer hardware is using USB ports, however much of the legacy hardware uses older RS232 or parallel communication. They are all just different communication protocols and different hardware manufacturers selected whatever protocol THEY felt would be best for their application.
Just about everything is USB now. It's far more flexible.
Generally, no; modern computers have several USB (Universal Serial Bus) ports rather than the RS-232 serial ports, Centronics parallel (printer) ports, joystick/game ports or PS2 ports of older machines. In addition, newer machines may have FireWire ports or eSATA ports. The newest computers will usually have USB3 ports rather than the older USB2; USB3 is several times faster than USB2.
yes
parallel and serial port
dial-up modem, PS2, serial and parallel ports etc.
Usually serial. Parallel is almost completely gone, and serial is getting replaced by USB.
Parallel ports typically have 25 or 36 pin ports. Serial ports, by contrast, have only 9 pins. Both type of ports have two rows of pins.
Its Parallel and Serial
Serial ports only allow one device to send and one device to receive at a time, where a parallel port can send and receive data at the same time.
COM ports transfer data using a serial connection as opposed to a parallel connection.
Yes It Can
true.
give the difference between serial port and parallel port