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Since the launch of the new medical reform, the informatization and intelligence of medical and health care have been accelerated. Smart medical care is becoming a hot spot in the entire medical in...[Details]
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It has been a month since I got the board and started the transplantation. Now I will look back and summarize it for future reference.
Phase 1: Building the environment (vmware + redhat linux 9)
...[Details]
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Recently, 360's new W906 children's watch has successfully passed the network access test of the Ministry of Industry and Information Technology. It uses the ALIOS operating system and is built on AS...[Details]
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According to "Wall Street Journal" citing supply chain information, SK Hynix's DRAM products such as LPDDR5/LPDDR4/NAND/DDR5 are said to have increased in price by 15%-20%.
Supply chain source...[Details]
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This program is downloaded from a foreign forum. It uses 51 single-chip microcomputer + dac0832 to play wav music. The music data can be input from the serial port. If the sound is very low, the data ...[Details]
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According to the Financial Times, the Shanghai Intellectual Property Court recently accepted a patent infringement lawsuit filed by Shanghai Jingfeng Mingyuan Semiconductor Co., Ltd. (hereinafter ref...[Details]
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app: open , read , write Driver: led_open, led_read, led_write Driver framework: 1. Write: led_open, led_read 2. How to tell the kernel? a. Define a file_operations b. Tell the kernel abo...[Details]
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There are many methods to measure the load resonance frequency of a crystal oscillator, and the direct impedance method is one of them. It uses a network analyzer and is more accurate, convenient, ...[Details]
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This is the main interface
This is the main menu interface
This is the sub-interface for setting time
This is the setting date
Setting the Backlight ...[Details]
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The source program of the 51 single-chip PCA9685 driver board driving the servo single-chip is as follows: #include reg52.h #include intrins.h #include stdio.h #include math.h type...[Details]
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Under the general trend,
the use of
LEDs
for general
lighting
is just around the corner. LEDs have many advantages in general lighting, such as longer life and higher efficiency. How...[Details]
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STMicroelectronics announces preliminary fourth quarter 2021 revenue, fourth quarter and full year earnings release and conference call schedule
Preliminary fourth quarter 2021 ...[Details]
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To all county (city) and district development and reform (price) bureaus:
In accordance with the spirit of the Provincial Price Bureau's "Notice on Adjusting the Electric Vehicle Charging Serv...[Details]
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#include
#define unchar unsigned char
sbit k1=P3^0;
sbit k2=P3^1;
sbit k3=P3^2;
sbit k4=P3^3;
sbit k5=P3^4;
sbit k6=P3^5;
sbit k7=P3^6;
sbit k8=P3^7; //按键号码
unchar spyon();
unchar led...[Details]
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Negative feedback amplifiers have been widely used due to their excellent performance. However, students often find it difficult to judge the positive and negative properties of feedback, especially ...[Details]
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