As of June 1, the netizens who have studied for a long time and have the highest comprehensive scores in after-class exercises, learning tests, and certification tests will be announced. As a token of...
The infinite temperature sensing network I designed consists of a routing device and two temperature measurement nodes . Should the programs of the two temperature measurement nodes be the same? I use...
I now know that in ARM, software interrupts (SWI call) are used to switch the mode to super user mode (SVC mode). Then, the parameters of SWI can be stored in R0 using these two sentences: LDR R0, [LR...
Working principle of microwave oven magnetron In addition to generating the required electromagnetic oscillation, the anode resonance system of the magnetron can also generate a variety of electromagn...
I want to modify the camera driver made by testcap in DDK and use DMA to get data. The DDK document says that SRB's ScatterGatherBuffer is used as DMA, and NumberOfPhysicalPages is the number of eleme...
There are two projects, one has the define value of QEIPOS register in the header file lpc1700.h, and the other has only a typedef struct in LPC17xx.h. I don't quite understand how to use this registe...
1. Introduction
RFID (radio frequency identification) is a non-contact automatic identification technology that emerged in the 1990s. It uses the characteristics of radio frequency signal prop...[Details]
introduction
my country has a vast territory and a large population. The scale of housing construction is huge, and the amount of residential construction is large and wide. It is still on t...[Details]
In
circuit design,
current
measurement
is widely used, and the main fields are divided into three categories: in measurement,
the electric meter
is used to measure the curre...[Details]
1. Overview
Will passive devices
produce nonlinear intermodulation distortion? The answer is yes! Although there is no systematic theoretical analysis, it has been found in engineerin...[Details]
Electronic systems are located at different points on the automotive power bus and therefore often need to operate under very stringent power requirements. These include load dump, cold crank, very lo...[Details]
Images in science fiction movies often break through the limits of reality, such as in the movie "Minority Report." Tom Cruise uses a multi-touch screen to browse information. Capacitive sensing te...[Details]
1. Introduction
Testing the temperature of steel billets before rolling is an important measure to ensure the quality of steel. Traditional manual testing is difficult to ensure product qu...[Details]
Xiaomi, a well-known Internet phone in mainland China, won a million-unit order contract from China Unicom on November 20 last year, which made Xiaomi famous in mainland China. In April this year...[Details]
1 Introduction
There have been many studies on the detection and protection of power grid short circuit and line fault. The short circuit, overload and overvoltage protectors on the market have ...[Details]
Single-chip microcomputers are widely used because of their small size, powerful functions and low price. This article introduces the method of designing a micro electronic piano using the AT89C51 sin...[Details]
This article will introduce a design method for a distributed control system used in a tracking car, which can perform distributed control of motor modules, sensor modules, and lighting control mod...[Details]
introduction
At present, measuring instruments are developing towards networking, and each individual embedded instrument will become a node on the Internet. This system realizes the network...[Details]
With the rapid development of the national economy, lifting and hoisting operations are used more and more frequently and widely in various fields of economic construction. China has continuously expl...[Details]
Distributed Wireless Communication System (DWCS) uses distributed antennas, distributed processing control, joint signal processing and other technologies to improve the system's spectrum efficie...[Details]
introduction
At present, the research on micron and nanotechnology is very active, which has led to the rapid development of microtechnology and micro-mechanical electronic system (MEMS) t...[Details]