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/****************************************************Dividing line*******************************************/ // Add the following code. If printf function is supported, you do not need to selec...[Details]
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The shortest electron pulse to date lasted only 53 attoseconds. Image source: British "New Scientist" magazine website The British "Nature" magazine website recently reported that German scienti...[Details]
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As the automotive industry continues to adopt 48V systems in hybrid electric vehicles (HEVs), the need for signal isolation in vehicle networks becomes more important. Without reliable and effective ...[Details]
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Infrared
Light-emitting diodes
(such as SE303.PH303) are similar in appearance to light-emitting diodes (LEDs) and emit infrared light. The tube voltage drop is about 1.4v, and the operating ...[Details]
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Boot from u-boot (1.1.6) in nand u-boot loads kernel (3.0.1) in nand, and then kernel starts The kernel mounts the third partition in nand (formatted as yaff2) as the root file system and execute...[Details]
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#include
char code msg ={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
void delay(int t)
{
for(;t!=0;t--);
}
void main()
{
unsigned char *i,p;
while(1)
{
...[Details]
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DAC Introduction DAC means digital-to-analog conversion. The DAC module consists of three parts: "trigger selection", "control logic" and "digital-to-analog converter". Among them, "trigger selection...[Details]
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Many people say that one of the biggest advantages of PIC microcontrollers is their low power consumption. Let’s discuss how to achieve low power consumption.
1. Sleep
Sleep mode is one of the mo...[Details]
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Hello everyone, signal modulation technology is now used in many fields. I learned from communicating with customers that they need to perform frequency analysis on FM signals. So how should we use Z...[Details]
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Mask breathing air tightness tester The mask breathing air tightness tester only tests half masks; each sample must not have the following conditions: 1. When the exhaust gas flow rate has reached 50...[Details]
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#include stc12c5a.h
#define uchar unsigned char
#define uint unsigned int
uchar led ={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
uchar key ={0xfe,0xfd,0xfb};
unsigned char...[Details]
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Signal source is one of the four common electronic measuring instruments, the other three are: network analyzer, spectrum analyzer and oscilloscope. This article introduces the basic knowledge of...[Details]
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In ATMEL's 89S51 series, 89S51 has the same function as 89C51. Command compatible. HEX programs can be used directly without any conversion. 89S51 only adds a watchdog function than 89C51. For other ...[Details]
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Safety and functionality are two main goals in the evolution of automotive technology. The former is people's core demand for cars as a means of transportation, in order to prevent accidents caused b...[Details]
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Last time, I finished reading the boot assembly and prepared the C operating environment. Now I will start to learn the C source code and jump from the start.S file to the file
lib_arm/board.c ...[Details]
Analog electronics
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