并行口和串行口叙述（国外英文资料）.docVIP

并行口和串行口叙述（国外英文资料） A serial port and parallel port The biggest difference is that the speed is different and the serial port is fast. The line of hard disk is similar to the width of a small finger, and the connection line is wider, with your three fingers and the same width. Serial ports are usually used for special external equipment. Such as communication equipment. The parallel port is usually used to connect the printing device. The string is small, the protruding needle is out. It is usually larger than the serial port, usually red, with two rows of holes A serial port is a driveway, with eight lanes At the same time, eight bits (one byte) data can be delivered. But its not fast, because of the interference between the eight channels. Transmission is limited by speed. And when the transmission goes wrong, the data will be re-passed at the same time. There is no interference in the serial port, and the transmission error will be returned. So fast is faster than parallel. This is how the hard drive is valued. There should be: hard drives, motherboards, and printers. Serial ports are usually used for special external equipment. Such as communication equipment. The parallel port is usually used to connect the printing device. The string is small, the protruding needle is out. It is usually larger than the serial port, usually red, with two rows of holes A serial port is a driveway, with eight lanes At the same time, eight bits (one byte) data can be delivered. But its not fast, because of the interference between the eight channels. Transmission is limited by speed. And when the transmission goes wrong, the data will be re-passed at the same time. There is no interference in the serial port, and the transmission error will be returned. So fast is faster than parallel. This is how the hard drive is valued. Serial ports and parallel ports are different ports of connection. The two ports have different shapes, speeds and connected devices. A serial port is one by one,