What are the differences between Serial cable and VGA cable?

Serial interface (DB9) and VGA interface (DA15) with the typical application of the D-sub interface, serial cable (Serial Cable) and VGA cable (Video Graphics Array Cable) is a cable for two different purposes, they have a lot of differences in terms of usage, function and characteristics.

The uses are different:

Serial cable is mainly used for serial communication between computers and other devices for transferring data and control signals. It is usually used to connect the data transmission between the computer and serial devices (such as modems, printers, routers, etc.). While VGA cable is mainly used for image transmission between computer and monitor for displaying images and video signals from the computer.

The transmission types are different:

Serial cables are mainly used for serial transmission, i.e. data is transmitted bit by bit in a continuous manner. While VGA cable is mainly used for analog image transmission, that is, the image signal is converted to analog voltage signal for transmission.

The number of wires and pins are different:

Serial cable usually has 9 wires, including data lines (such as TX, RX), ground and control lines (such as RTS, CTS). While VGA cable usually has 15 wires, including red, green and blue color signal lines, horizontal and vertical synchronization signal lines, and ground lines.

Different transmission rates:

The transmission rate of serial cable is relatively low, usually between tens of bps and several Mbps, depending on the support capability of the serial device. While the transmission rate of VGA cable is higher, it can support high resolution and high refresh rate image transmission, common transmission rates are 60Hz, 75Hz, 85Hz and so on.

Transmission distance is different:

Serial cable transmission distance is generally shorter, usually between a few meters to tens of meters, depending on the serial port equipment and cable quality. The transmission distance of VGA cable is relatively long, can reach tens of meters or even farther, depending on the strength of the image signal and cable quality.

Resolution support is different:

Serial cable does not involve image transmission, so it does not involve the issue of resolution. While VGA cable can support different resolutions, from low resolution (such as 640x480) to high resolution (such as 1920x1080) can be transmitted by VGA cable.

The interface types are different:

Serial cables usually use serial interfaces such as DB9 to connect computers and serial devices. While VGA cables usually use a 15-pin VGA connector to connect computers and monitors.

Signal types are different:

Serial cables transmit digital signals, data represented by binary codes. VGA cables, on the other hand, transmit analog signals, continuously varying voltage signals, which are used to control the image display of the monitor.

As can be seen from the above, serial cables and VGA cables are two different cables used for different purposes of data and signal transmission. Serial cables are mainly used for serial communication between computers and other devices to transmit data and control signals. VGA cables, on the other hand, are mainly used for image transmission between computers and monitors for displaying computer images and video signals. The choice of which cable to use depends on the specific application requirements and device compatibility.

As a professional manufacturer of high speed cables, OIKWAN has been producing and stocking a large number of high speed cables such as Mini SAS cable, HD MINI SAS cable, SATA cable, industrial serial cables, etc., and supports customization. Among them, the USB serial cables produced by OIKWAN Industry support RS232 standard, built-in FT232 chip, compatible with a variety of operating systems, and can be widely used in various fields and scenarios. For business cooperation, please contact the following staff:

Mr. Wang Tel: 13713335011; Email: wym@oikwan.com.cn

Mr. Peng Tel: 15797958662; Email: pengjian@oikwan.com.cn