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1. GPS receiver (garmin gps 35), which provides location information of the vehicle

2.gsm module (siemens tc35) for sending sms (text information) to a preset mobile phone

3.ibutton (ds…

[Source: "High-tech LED - Technology and Applications" June issue]

The existing high-power LEDs generally have the problem that the light extraction efficiency is not high enough, so…

Following the launch of the MLCOB "Hongxing" series of special light source for fluorescent tubes, Hongli Optoelectronics recently launched a new generation of high-efficiency, high-heat-dissipation, cost-effective COB LED light source LB032…

Semiconductor lighting sources have entered the field of lighting in batches, but there are many problems, mainly performance, reliability, light color quality and cost. The content related to performance and light color quality is rich, such as visual comfort and inte…

LED lighting applications will begin with three basic input power levels: low power less than or equal to 20W, medium power between 20W and 50W, and high power greater than 50W applications: see Figure 1. Keep in mind that real-world applications don't fit exactly into these three divisions…

Traditional op amps drive power amplifiers, which are difficult to increase due to the limitations of the op amp voltage. The power amplifier uses the voltage conversion current mode to directly drive the power amplifier tube for power amplification, so the o…

When GPS satellites are used for navigation and positioning, the main task of the user receiver is to extract the pseudorandom noise code and data code in the satellite signal to further calculate the navigation information such as the position, velocity and time (PVT) of the receiver car…

What is BootLoader?
BootLoader is a small program that runs before the operating system kernel runs. Through this small program, we can initialize the hardware device and establish a memory space map to bring the system's hardware and software…

1. What is Global Positioning System (GPS)?

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The Global Positioning System (GPS) was developed in the United States in the 1970s. It lasted for 20 years and cost 20 billion US dollars. It was ful…

Sharp suffered a huge loss in 2011, with a loss of 290 billion yen (about 3.8 billion US dollars) for the whole year, becoming the largest annual loss since the company was founded. In addition to the natural disasters such as earthquakes, it is also related to the shrinking demand for LC…