Recently I have seen some products that can swipe cards directly on the top of the screen. Aren't the bottoms of normal 5/7 inch screens made of metal? How can they swipe IC cards? Please give me some...
In this circuit, the antenna (spring) is connected to the base of the first transistor. When we place the antenna near an object excited by AC current, a small current is induced into the antenna due ...
Definition of freewheeling diodeA freewheeling diode is a diode that plays a freewheeling role in a circuit. For example, an ordinary diode 1N4007, if you use it in a circuit to play a freewheeling ro...
Challenges that 5G brings to the design of base station RF PA:
On the one hand, the linearization of PA is becoming increasingly difficult;
On the other hand, the requirements for PA efficiency are ge...
On August 3, Huawei Technologies Co., Ltd. disclosed the patent for "Method and device for training intelligent agents", publication number CN113206786A. The Qichacha patent abstract shows t...[Details]
Cold start - refers to powering on again after power failure. Cold start is when downloading a program, in order to detect whether there is a download signal on the chip. If there is, download; if no...[Details]
STMicroelectronics’ low-temperature drift, high-accuracy op amp increases operating temperature to 175°C Enhanced resistance to denaturation and extended service life, suitable for automotive and ...[Details]
License plate recognition technology is an important means of traffic automation management and an important part of the vehicle detection system. It gives recognition results in a computer-process...[Details]
How to download the latest firmware library for stm32.
1.http://www.st.com/web/catalog/tools/FM147/CL1794/SC961/SS1743/PF257890
2. Download
STSW-STM32054
3.5.0
Active
dow...[Details]
In fact, every man has a dream of "Iron Man" in his heart. I hope I have the same skills as the male protagonist and can change the world through technology. However, if you want to achieve this step...[Details]
Forward and reverse control circuit to prevent phase short circuit
First, close the main circuit breaker QF and the control circuit breaker QF2 to prepare for circuit operation.
...[Details]
It was learned from the "Unleashing the Potential of Connectivity - Huawei Network Innovation Technology Forum 2019" series of activities held in Shijiazhuang recently that Huawei and Hebei Mobile ha...[Details]
On January 4, realme officially launched the high-end flagship mobile phone - realme GT2 Pro equipped with the new generation Snapdragon 8 mobile platform. The phone brings comprehensive technologica...[Details]
In recent years, LED electronic display screens have attracted increasing attention as a high-tech product. They can display text, graphics and image information in real time or in a loop. They hav...[Details]
I was going to write the tick timer next, but I struck while the iron was hot and wrote the port from SPI2 to SPI1. Why should the migration from SPI2 to SPI1 be written in the nRF24L01 modul...[Details]
Inverter shipments, this is another highly anticipated ranking! In 2021, the global inverter shipments of China have risen to a higher level, and the ranking has risen again, occupying the top four...[Details]
RS-232/485 is the most widely used serial interface in PC and communication industry, and is defined as a single-ended standard that increases the communication distance in low-speed serial communicat...[Details]
The basic structure of the 8051 series MCU includes: 32 I/O ports (4 groups of 8-bit ports); two 16-bit timer counters; full-duplex serial communication; 6 interrupt sources (2 external interrupts, 2...[Details]
Qualcomm 7, the "full attendance" at the CIIE, attended the CIIE, showing a new chapter in intelligent computing and ecological cooperation
On November 5, the 7th China International I...[Details]