What is the difference between using * and ? in the day of the week in a cron expression? I checked some information, but none of them are clear. For example, one of the information saysCron expressio...
The driver board has arrived and has been soldered. I have been busy outside for a while and was sent by the company for training. I am only starting to post now.
It uses a conventional 6MOS driver, a...
Power management, battery management (26 questions and answers in total, compiled by TI power battery expert Richard Tang)
Selection design, fast charging and wireless charging, LDO design, battery li...
Seeing that @未见's Qinheng CH224D USB PD portable soldering iron is here , I was reminded of PINE64's latest portable soldering iron, which is based on the domestically produced Boluo BL706, supports l...
It seems increasingly unlikely that Apple will reportedly expand its LiDAR Scanner to the entire iPhone 13 lineup this year. Apple introduced the LiDAR Scanner on the iPad Pro in March 2020 and lat...[Details]
Experiment: AT24C04 basic read and write operations Steps and phenomenon: Before downloading the program, select the IRC frequency of stc-isp: 12MHz. After the program is downloaded, in the serial ...[Details]
Vishay launches enhanced version of 0805 package surge-resistant thick film resistor with power rating up to 0.5 W The device has passed AEC-Q200 certification, saving circuit board space while red...[Details]
On July 8, the technical cooperation between Nezha Auto and Infineon Technologies and the global launch ceremony of Infineon's BMS overall solution were held at Nezha Auto's Tongxiang All-Ecologic...[Details]
The 750 kV and JIS equipment under construction at Taratan in Hainan Prefecture, Qinghai Province, has a foundation length of 755.89 meters and a width of 23.55 meters. It is currently the longest ...[Details]
1. NandFlash initialization Nandflash initialization mainly includes the setting of the timing diagram and the enabling of the Nandflash controller. Let's first look at the timing diagram in the S3C...[Details]
China Energy Storage Network News:
On November 6, Jinan's 110 kV Shangxi Smart Substation was connected to the grid, marking the commissioning of the State Grid Corporation of China's first s...[Details]
0 Introduction
Developing electric vehicles is an important decision for the country to cope with the international environmental and energy crisis. my country has vigorously developed electri...[Details]
Important functional parts in ADAS systems are developing rapidly. DMS (Driver Monitor System) is the abbreviation of driver monitoring system. It is also a very important function of the currently...[Details]
Burn-in principle
The process of burning in headphones is mainly to make the mechanical system of the headphones age quickly and reach a level of running-in. The sound system of dynamic headph...[Details]
When it comes to radio frequency admittance level switches, most people in the instrumentation industry are familiar with them. But when it comes to the application scope of radio frequency admitta...[Details]
On August 31, Ruifeng Optoelectronics stated in an institutional survey that it has invested a lot of resources in the research and development of MiniLED backlight products, direct display products,...[Details]
Touch screens are divided into surface acoustic wave screens, capacitive screens, resistive screens and infrared screens according to their working principles.
Surface acoustic wave touch scre...[Details]
According to 9to5mac, Apple plans to build a European chip design center in Munich, Germany, and will invest more than 1 billion euros in the next three years. The report said that the factory will ...[Details]
Abstract
The reasons why radio remote control switches cannot be popularized are analyzed. A new infrared switch for intelligent building lighting control, the Kling switch, is introduced. Th...[Details]
Discrete Device
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