Gas stoves are very common in the family, and cooking and soup are all needed. Gas stoves are easy to use, so they can be used easily by both children and the elderly. However, the gas stove has some safety hazards. The following is the safety of the gas stove that Xiaobian has compiled for everyone. I hope to help everyone! What are the safety risks of gas stoves? 1. Do not exceed the service life. The standard life of the gas stove is 8 years. Under normal circumstances, it should be replaced once in 6 years. In every other year, the intake valve, pulse valve, ignition knob, etc. should be replaced. Use high frequency parts to prevent aging of gas stoves and cause safety accidents. Second, the quality is not reasonable design, tempered glass self-explosion is also a common accident, it is understood that tempered glass self-explosion is mainly caused by unstable nickel sulfide in the glass, of which temperature difference is an important factor. At high temperatures, the activity of nickel sulfide in tempered glass is enhanced, and the stress balance of tempered glass is destroyed. After long-term heating, some of the stones will change with time, causing cracks inside the glass, causing the glass to rupture. Third, do not use counterfeit or cottage brand gas stoves, the best choice of brand gas stoves using gas stoves, if you choose the cottage version of the gas stove in the process of use or danger, simply can not contact the manufacturer for repair or compensation. Fourth, the stove is overloaded, the gas stove panel explosion, mainly because the panel maintains a high temperature for a long time, if two stoves work at the same time, then it is best not to exceed four hours. Because gas, natural gas and other gas sources are different in nature, explosions may occur when the gas source is mixed again. 5. If the gas stove is damaged, if the gas stove shows signs of rust and deformation, then the best choice is to replace the gas stove. The internal requirements of the gas stove are very high. If there are problems such as deformation and tube damage, it may cause leakage. There is a great danger in gas.
VGA, or Video Graphics Array, is a standard for Video transmission using analog signals. Early CRT displays could only receive analog signal input due to design and manufacturing reasons, so the video card inside the computer was responsible for digital-to-analog conversion, and the VGA interface was the interface for the output of analog signals on the video card. Today, LCD monitors can receive digital signals directly, but in order to be compatible with VGA interfaces on video CARDS, VGA standards are mostly supported.
In VGA video transmission standard, the video image is decomposed into red, green and blue primary color signals. After digital-to-analog conversion, the video image is transmitted in three independent channels under the synchronization of HSYNC and VSYNC signals. The synchronization timing of VGA in the transmission process is divided into line timing and field timing. VGA timing consists of three elements: pixel clock, row field synchronization signal, and image data.
Early VGA specifically refers to the resolution of 640X480 display mode, later, according to the resolution, VGA is divided into VGA (640X480), SVGA (800x600), XGA (1024x768), SXGA (1280x1024), etc. VGA display timing at different resolutions is similar
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