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...
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...
The Blackboard is a circuit board with 24 capacitive touch pads, 9 customizable LEDs and a Raspberry Pi Pico.The new HID functionality is fully customizable and can use 24 buttons and 9 LEDs at the sa...
Recently, at a national video defense meeting for the "Twelfth Five-Year Plan" science and technology plan projects (formerly the "863" projects) in the field of national high-tech development and ...[Details]
August 13th news, Ziguang Guowei and the National New Energy Vehicle Technology Innovation Center (abbreviated as " The two sides will focus on new energy Collaborative innovation and cross-borde...[Details]
1.1 Importance of testing
With the rising consumer awareness today, every manufacturer of electrical and electronic products must do their best to ensure the safety of their products. The design of e...[Details]
First of all, we must understand that when porting ucos-II to ARM920T, the following task stack structure is used: Program Listing: Analysis of OSCtxSw Implementation Based on ARM920T Note: ARM n...[Details]
There are two reset signals for MSP430: power-on reset signal (POR) and power-on clear signal (PUC). There are also signals that can trigger POR and PUC: 5 from the watchdog, 1 from the reset pin, and...[Details]
1. Background
When doing the conducted emission experiment, it was found that the PE grounding position of the driver's motor line would have a great impact on the test results, causing the te...[Details]
Applied Materials Details Progress on Its 10-Year Sustainability Roadmap • Applied Materials' latest Sustainability Report outlines the company's efforts to reduce its carbon footprint and increas...[Details]
1. LED soldering conditions Figure 2. Temperature-time relationship diagram for two types of LED welding (a) Direct-plug LED; (b) SMD LED (1) Soldering with a soldering iron. The tip tempe...[Details]
After GGII released the data for December, we can have an overview of the domestic battery industry in 2019. We can clearly see the differences in market demand and the watershed of evolution. The su...[Details]
The output voltage of a voltage reference device can be adjusted with a digitally controlled potentiometer (DCP) without significantly changing the device's temperature coefficient (TC), which de...[Details]
Foxconn's success today is directly related to Terry Gou's sensitive grasp of every market opportunity. Some even believe that "Foxconn is Terry Gou", and its management model and operating mechanism...[Details]
In cars, from the early wired signal transmission to the current network signal and big data transmission, the most basic function is in-vehicle connection. However, with the increasingly accelerated...[Details]
On October 21, Zeng Yunzhong, deputy director of the Standing Committee of the Municipal People's Congress, and his delegation went to Lianjie Chuanwei for research and supervision, and in-depth un...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
