The filter is one of the essential key components in the RF system. It is mainly used for frequency selection - allowing the required frequency signal to pass through and reflecting the unwanted inter...
GPIO operations can be performed through the sys file system interface. When the file system operates GPIO, you must first check whether the GPIO you want to operate is occupied by other drivers. If i...
There have been posts before that reflect that when performing UART testing, since the UART interface on the board does not provide power to the development board, two USB cables are required, one for...
Although it is just a target reporting device, it is not only used for display, but also has wireless communication and human-computer interaction interface. I have never done interface development in...
introduction
This article describes the principles of measuring the momentum and oscillation of an object using an accelerometer, microcontroller hardware/software, and an LCD display. Since the ac...[Details]
introduction
LabVIEW has two basic windows, the front panel window and the flowchart window. The front panel window is used to set control objects and display objects, which is equivalent to t...[Details]
Both bit and sbit are variable types extended by C51.
Bit is similar to int char, except that char = 8 bits and bit = 1 bit. They are all variables, and the compiler assigns addresses during the comp...[Details]
Multiple antenna techniques have been used in mobile wireless systems since the beginning. In the early days of base station transmission and vehicle-mounted mobile station reception, multipath pro...[Details]
Design idea: Use timer interrupt to generate the minimum time unit T0, every m T0 forms a sub- cycle T10, of which the first n T0 is the LED conduction time, that is, Ton=n*T0, then Toff=(mn)*T0 ; ev...[Details]
uchar code KEY_TABLE = { 0x77,0xB7,0xD7,0xE7 0x7B,0xBB,0xDB,0xEB 0x7D,0xBD,0xDD,0xED 0x7E,0xBE,0xDE,0xEE }; //The upper four bits are the columns, the lower four bits are the rows ucha...[Details]
With the development and improvement of LED technology, large-scale LED display screens have been widely used in various public places to display multimedia information such as text, graphics, vide...[Details]
Recently, a new realme phone with model number RMX3610 was registered with the Ministry of Industry and Information Technology, and its relevant configuration and ID photos have been exposed. ...[Details]
In 2019, State Grid Ningxia Electric Power Co., Ltd. started construction of 110 kV and above power grid projects with a total length of 545.32 kilometers and 2.543 million kilovolt-amperes, and pu...[Details]
A lot of software is built on reusable open source components. While the efficiency gains and cost savings of code reuse are clear, companies rarely regularly check open source code for potential sec...[Details]
How can high-rise buildings transform from large load users to large power generators? The virtual power plant control system can flexibly adjust the preset temperature, fan speed, air volume and othe...[Details]
Jiwei.com reported on December 9 that according to foreign media reports, new documents submitted by Samsung to Brazilian regulators show that Samsung is following Apple's example, and the three devi...[Details]
The circuits in this Design Idea take advantage of an inherent characteristic of the collector voltages in a single transformer push-pull dc/dc converter: they swing twice the supply voltage. When ...[Details]
Silicon carbide has excellent electrical properties such as high voltage resistance, high temperature resistance, high frequency, and radiation resistance. It breaks through the physical limitation...[Details]
RF/Wirelessly
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