Serial ports
I/O Ports => I/O port is a channel that enables I/O devices to communicate with the system.Different type of ports like serial port, parallel port,USB port are available. serial port is used to transfer a single bit of data at time.it can be used to connect any type of serial device like a mouse , moderm ,printer etc. UNIVERSAL SERIAL BUS (USB) is an I/O port used to connect different external device like a hard disk drives,printers,mice,scanners etc. A PARALLEL PORT can transfer multiple bits,but a SERIAL PORT can transfer only one bit at a time. Serial port I/O port is a logical channel the I/O devices to communicate with the system. there are different kind of port like serial port,parallel port, USB port etc. serial port is used to transfer single bit of data at a time.the serial ports confirm to RS -232c or RS-422 standards.it can be used to connect any type of serial device like a mouse , moderm ,printer etc. USB is also a type of serial port and stands for Universa...