Knowledge

Each type of PLC has built-in standard configuration of two communication interfaces, namely RS232 and RS485 communication interface. RS232 interface is mainly used for downloading programs or for com

RS-232 is a serial physical interface standard developed by EIA (Electronic Industry Association). RS is an abbreviation of English "Recommended Standard" and 232 is an identification number. RS-232 i

Uart refers to the TTL level serial port; RS232 refers to the RS232 level serial port. The TTL level serial port is the input and output end of the serial port of the general chip, and the chip that c

PROLIFIC has introduced the USB to-class RS232 interface conversion chip PL-2303HX. PL-2303HX can be perfectly applied to communication cables with PCs such as PDAs, modems, GPS, mobile phones, digita

Ultra160 SCSI, also named Ultra3 SCSI LVD, is a relatively mature SCSI interface standard developed on the basis of Ultra2 SCSI. It adopts new technologies such as double conversion clock control, cyc

Ultra320SCSI, also named Ultra4 SCSI LVD, is a relatively new SCSI interface standard. Ultra320SCSI is developed on the basis of Ultra160SCSI. The advantages of Ultra160SCSI continue to be promoted. T

POST: POST (Power-On-Self-Test) is a major part of the BIOS function. It is responsible for the detection of CPU, motherboard, memory, soft disk subsystem, display subsystem (including display cache),

DVI interface can be turned to VGA interface. Usually implemented by adapter DVI-I adapter VGA, Following are the steps of the operation:

Many people think that only the HDMI interface can transmit HD signals, but it is wrong, because the VGA connection can also display 1080P images, and even the resolution can be higher, so use it to c

There is also a HDMI to VGA cable, in fact, its role is similar with the converter. But you can't simply think of it as a normal cable. Since the HDMI interface provides a +5V power supply, it can dir

HDMI is the abbreviation of (High Definition MulTImedia Interface), which means high-definition multimedia interface. HDMI is a digital video/audio interface technology. It is a dedicated digital inte

The difference between DisplayPort and HDMI, HDMI is the first to be developed for CRT, whether it is HDMI or its twin brother UDI (substantially remove the HDMI audio transmission function), both inh