# Goodbye 2019, hello 2020. I muster up the courage to make a post to summarize and look forward to the future. 2019 was the most difficult year, but also the happiest year. The difficulty was due to ...
PPTC (Poly-Positive Temperature Coefficient) devices are a reliable and economical solution for current overload protection of computers and related devices. Since these devices are available in a var...
[size=4]The two most commonly used methods for measuring algorithm running time during TI CCS platform DSP development. One is more convenient to use in projects with SYS/BIOS system, and the other is...
[i=s]This post was last edited by Jacktang on 2021-5-26 07:36[/i]Recently, I encountered two major pitfalls when using HC32F460 APP jump. I would like to share them with you so that netizens who have ...
Smart hardware cannot avoid EMI problems, and power supply EMI filters are an effective means. Today, let’s talk about the design principles, network structure and parameter selection of DC power supp...
[i=s]This post was last edited by alan000345 on 2020-3-11 17:44[/i]Recently, I saw " Qorvo Launches Industry's Highest-Performance Broadband GaN Power Amplifier " and found that this Qorvo product is ...
Here we introduce a rectifier that uses a 6Pl electron tube for rectification and has an adjustable output DC voltage. The output voltage can be changed from a dozen volts to several hund...[Details]
A few days ago, I used arm-none-eabi-gcc to compile a STM32F103C8 program, which is a simple running light program. #include "stm32f10x.h" int main(void) { int i; RCC- APB2ENR=0xFFFF...[Details]
France’s Electronic Communications and Postal Authority (Arcep) has taken steps to regularise a 5G spectrum auction that was postponed due to the coronavirus pandemic, with plans to launch the proces...[Details]
Non-isolated buck power supply is a commonly used power supply structure, accounting for more than 90% of fluorescent lamp power supply. Many people think that non-isolated power supply only has buc...[Details]
Public transportation has strong advantages that cannot be matched by individual transportation. Giving priority to the development of urban public transportation systems is the best way to solve...[Details]
Traditional incandescent light bulb railway handheld signal lights are easy to damage, inconvenient to repair, and traffic accidents occur frequently. However, light emitting diodes (
LEDs
)...[Details]
Recently, Sichuan Province issued the "Implementation Plan for the Sichuan Province Industrial Vocational Skills Improvement Action Plan (2020-2021)" (hereinafter referred to as the "Implementation P...[Details]
I am working on a small project of stm8L, powered by a battery. When the button is long pressed to shut down, the system enters the shutdown mode. Although the current consumption is more than ten mA...[Details]
Since the servo system serves many purposes, such as computer CD drive control, radar tracking system, feed tracking system, etc., the requirements for the servo system are also different. The tech...[Details]
Apple released its fourth-quarter financial report for fiscal year 2020 yesterday, with Mac revenue of $9 billion, setting a new quarterly record. Apple's annual Mac revenue this year was $28.6 billi...[Details]
LED light source technology is becoming more mature, and the luminous lumens per watt are increasing rapidly, which has led to a gradual price reduction. The massive market of LED green lamps and the...[Details]
HTC's life force became even weaker. According to statistics from App Brain, HTC has removed 14 of its own mobile phone apps from the Play Store since February this year, including the Se...[Details]
【Summary】 【Reason for writing】 【Question Structure】 【Analysis 1】Overall Process get_free_pages and mmap 【Analysis 3】CPU and TLB CPU and L1 cache CPU and L2cache 【Summarize】 Note:...[Details]
Samsung Electronics released a report revealing that its sales of ultra-large TVs have seen significant growth. In the first three quarters of this year, sales of TVs 80 inches and above climbed 15...[Details]
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