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       The iPhone 11 series is about to be released, and details about this new phone are gradually being revealed. 　　On September 18, according to foreign media reports, the US versions of iPhone 11...[Details]

1. Is there any fixed relationship between bandwidth and sampling frequency? The sampling rate should theoretically meet the sampling law of Nongxiaoxiang, that is, each cycle of the highest frequenc...[Details]

Low cost and high reliability are two of the most important goals in offline power supply design. Quasi-resonant design provides designers with a viable method to achieve both goals. Quasi-resona...[Details]

Introduction to MCU Knowledge Before the emergence of computers, many skilled craftsmen made many exquisite machines. After entering the el...[Details]

The following understanding is purely a joke. The examples are input using Sogou input method. I don't care whether it is full-width or half-width! The first one is of course NOP, NOP. Garbage instr...[Details]

The remote control car is developed based on the STC89C52RC microcontroller. The car body consists of a chassis, a DC motor 33GB-520-18.7, an L298N motor driver module, a LM2596 step-down module, a 1...[Details]

I am using stm32f100, and when debugging SysTick_Handler(), I use the following configuration if (SysTick_Config(SystemCoreClock / 1000))   {      /* Capture error */      while (1);   } 周期为1ms， /**...[Details]

Last time I learned about the basic status of PLL in the STM32F4 clock system. Now I plan to configure the STM32 clock by myself and use PLL to multiply the main frequency of STM32F429 to 168MHz. Let...[Details]

　　introduction 　　In many electronic systems, it is necessary to provide bipolar (positive and negative) voltage or current to a specific type of load. Loads that require bipolar voltage/current inclu...[Details]

The entire state definition described in this article is still at the top level and cannot represent all the state details and events within the Orin series. The Orin series chip starts the ROM exe...[Details]

When the chip is powered on and reset, bit6 and bit5 of F4 are random, and non-powered reset keeps the original state unchanged. 　　 The following example writes data to the 30H and 50H registers of B...[Details]

Peripheral frame packet, a total of 14 bits 0-13   Source MAC address: 0-5 digits Target MAC address: 6-11 bits Type: 12, 13 bits   IP packet, excluding options, has a total of 20 bits, 14-...[Details]

According to foreign media reports, the next generation of new iPhones will see 5 new features of iOS 13 at WWDC. As we all know, Apple often does not show the best iOS13 features at once, such as th...[Details]

　　We can compare today's power management environment to the situation in the late 1980s. The 1980s and early 1990s were dominated by NPN linear regulators, simple circuits for shifting voltage level...[Details]

Recently, I have not been able to understand the concept of drivers very well. Sometimes I can get a feel for it by combining some USB examples written by others, but because the ARM system does no...[Details]