What Is a Parallel Port?
Parallel port (Parallel Port), also known as parallel port, parallel port, parallel port, is a port on the computer for data to be transmitted in parallel, which means that there should be at least two connection lines for transmitting data.
- Chinese name
- Parallel port
- Foreign name
- Parallel Port
- Time
- Before the 21st century
- Also known as
- Parallel port
- printer
- Zip Drive
- Video scanner
- Some early sound cards
- Some vintage cameras.
- Parallel devices, such as EPROM programmers, simulators.
- Parallel port (Parallel Port), also known as parallel port, parallel port, parallel port, is a port on the computer for data to be transmitted in parallel, which means that there should be at least two connection lines for transmitting data.
- Compared with a serial port that uses only one line to transmit data (the connection lines for grounding, control, etc. are not included here), the parallel port can transmit data faster at the same data transfer rate. So before the 21st century, parallel ports were widely used in places where larger transmission speeds were needed, such as printers. However, with the rapid increase in speed and the synchronization of data between the upper and lower wires, it has become a difficult problem to deal with, resulting in the parallel port being gradually eliminated in the speed competition. At present, improved serial ports such as USB gradually replace parallel ports.
Explanation of parallel port terms
- So before the 21st century, parallel ports were widely used in places where larger transmission speeds were needed, such as printers. However, with the rapid increase in speed, data synchronization between the wires on the parallel port has become a difficult problem to deal with, resulting in the parallel port being gradually eliminated in the speed competition. Improved serial ports such as USB have gradually replaced parallel ports.
- With the parallel port, users do not need to open the case for installation. They only need to connect to the parallel port of the PC with a cable, and then load the necessary drivers in the system to use it normally. The data transmission rate of the optical storage products of the parallel port is very low. The bidirectional mode can achieve a data transmission rate of 100KB / s to 530KB / s, while the EPP mode can reach a transmission speed of 1200KB / s, which is the standard speed
- 12 times the rate. However, compared with the built-in ATA / ATAPI interface, such a data transmission speed cannot meet the needs of users at all. For newer external USB or IEEE1394 interfaces, the parallel port is far behind in terms of speed and compatibility. Optical storage with parallel interfaces has basically been eliminated from the market, and products have disappeared.
- Parallel interface, referred to as parallel port, also known as LPT interface, is an extended interface using parallel communication protocols. The data transmission rate of the parallel port is 8 times faster than that of the serial port. The data transmission rate of the standard parallel port is 1Mbps. It is generally used to connect printers and scanners. So the parallel port is also called the print port.