I am learning Linux programming, the program is as follows: #include
#include#include
#include
#includeint main(){ FILE *fp=fopen("lhz.h","r"); fp=NULL; if(fp!=NULL){ while(!feof(fp)) putchar(fgetc(fp...
There are many aspects to discuss when analyzing the security of UWB technology. First, the power of UWB pulses is 1/10000-1/100000, and then the power of the signal emitted by the mobile phone, so ev...
I want to learn about TI c2000 microcontrollers, and I have a question when I look at the 2812 routines. The header file declares some register structures, but I don't see any file that associates the...
All you need is a small piece of PCB, solder an STM32 MCU and crystal on the PCB, connect the JTAG pins to the JTAG socket, and lead out all the MCU pins. I see a lot of new MCUs and want to try out t...
[size=4]There are few technologies or standards as ubiquitous as the Universal Serial Bus, the USB we are familiar with. For nearly 20 years, USB has always played a great role in helping us transfer ...
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]
Remote keyless entry (RKE) systems have become popular with users, with more than 80% of new cars in North America and more than 70% in Europe equipped with RKE systems. In addition to the obvious ...[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]
The data collector of the automatic weather station is generally designed based on a single-chip microcomputer or a PC/104 bus controller. It has the characteristics of good compatibility with PC, low...[Details]
introduction
The emergence of high-performance, low-power embedded CPUs and high-reliability network operating systems has made it possible to implement applications with large amounts of comp...[Details]
1 Introduction
Water resources are the basic conditions for human survival and the lifeline of economic development. The reality shows that due to the global shortage of water resources and th...[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]
At very low temperatures, certain metals and alloys lose their resistance to electric
current
and become
superconductors
. Two parameters that are often measured are the transition ...[Details]
introduction
MEMS is a high-tech that has flourished on the basis of integrated circuit production technology and dedicated micro-electromechanical processing methods. Pressure sensors develop...[Details]
The above is to use MB1404 as a stereo composite signal transmitter. You can use the internal high-frequency amplifier and oscillator or not! According to my experience, I still recommend beginners...[Details]
Cars equipped with xenon headlights are already common on the road. Whether they are standard equipment on high-end cars or embellishments on modified cars, xenon lamps are gradually becoming a sym...[Details]
Multimedia processors are often the most power-hungry devices in portable electronic devices. Common ways to reduce CPU power requirements are to reduce clock frequency or operating voltage, but th...[Details]
0 Introduction
The load with impact (rapid change) power in the power system will cause the voltage fluctuation and flicker of the power grid, causing many electrical equipment to fail to wo...[Details]
With the explosive growth of electronic functions in cars, will more and more luxurious cars endanger the safety of passengers? This is the origin of the problem of over-electrification of cars. What ...[Details]
Li/SOCl2 batteries (lithium sub-cells) have the advantages of high operating voltage, stable discharge voltage, wide operating temperature range and long storage life, and have been widely used in ...[Details]