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1. Summary of the second stage of uboot startup The second stage is mainly to initialize the hardware and software data structures at the development board level.   Step 1: Allocate memory space for ...[Details]

Abstract: Most electronics practitioners are familiar with "watchdog", which is a technical means to prevent computer programs from entering an infinite loop and jumping out. This article will show y...[Details]

On August 16, Shandong Chenzhong Machinery Co., Ltd., the automated production line was running at high speed, and workers were working hard to rush export orders. What was being produced was papermak...[Details]

At present, my country's 5G network has entered the stage of large-scale deployment. Faced with the demand for a large number of base station construction, co-construction and sharing has become a ...[Details]

The spectrum analyzer, also known as the "RF multimeter", is a widely used basic RF and microwave measuring instrument. It is often used to measure harmonics and spurious measurements of amplifiers/t...[Details]

USB 3.0 Receiver Testing         USB 3.0 receiver testing is similar to other high-speed serial bus receiver compliance testing. It is generally divided into three stages. The first stage is stressed...[Details]

After the release of the Red Magic 5G mobile phone, Lenovo's Savior gaming mobile phone immediately released a poster like this, which read "No Red, It's Magic". The implication of the Savior gamin...[Details]

Lithium-ion (Li-Ion) batteries are a popular method of energy storage for electric and hybrid vehicles. The energy density these batteries offer is the highest of any existing battery technology, b...[Details]

With the rapid development of computer technology, microelectronics technology and network technology, embedded systems have been widely used in many fields such as industry and agriculture. This art...[Details]

     On the morning of December 11, some sources said that Apple is preparing to launch the ninth-generation iPad with a 10.5-inch + A13 chip in the spring of 2021. 　　According to the release time an...[Details]

The annual Lei Technology annual list selection has kicked off! As previously announced, we will launch major lists starting from December 21, covering more industries and products, allowing 1.6 mill...[Details]

Brushed DC motor winding method There are usually several winding methods for brushed DC motors: 1. Parallel winding method This method is to connect the two ends of each coil ...[Details]

As the brightness increases and the price decreases, the market potential of white light LED in the field of general lighting is growing. The use of white light LED in the general lighting industry...[Details]

      Industrial designer Yifan Hu designed a Xiaomi concept phone. The phone was inspired by the new version of Xiaomi's brand logo announced in March 2021. At that time, Xiaomi's new logo sparked h...[Details]

　　AC Coupled Non-Inverting Amplifier 　　 　　Adjustable Gain Instrumentation Amplifier 　　 　DC amplifier Figure 23 Pulse generator 　Bridge current amplifier Figure 25 Reference different...[Details]