Based on 51 microcontroller basketball timing and scoring device design (Simulation + Program + Circuit Diagram + Schematic + Design Report) Function introduction Specific functions: 1. It can record the game time of the entire schedule, and can modify and pause the game time. 2. The scores of the two teams in the schedule can […]
Tag: timing
[Java] Timing tasks – Timer/TimerTask source code principle analysis
1. Background and usage When implementing various server-side systems on a daily basis, we will definitely have the need for some scheduled tasks. For example, automatic reminders for meetings half an hour in advance, scheduled/periodic execution of asynchronous tasks, etc. So how to implement such a scheduled task system? The Timer class provided by Java […]
7.2Loading timing of jvm class
Class loading timing–based on jdk1.8 1. Under what circumstances will a class be loaded? 1. Encounter the following 4 bytecode instructions 2. Use reflection to make a reflective call to a certain type 3. When initializing a class, if it is found that its parent class has not been initialized, you need to trigger the […]
Timing flash and PWM breathing light based on STM32 standard library
PWM breathing light based on STM32 standard library Article directory PWM breathing light based on STM32 standard library 1. Introduction to STM32 timing function 2. Introduction to PWM functions 3. Create project 4. Realization of LED flashing and extinguishing regularly 4.1 Code ideas 4.2 Configuration code 4.3 Burning results 5. PWM configuration function analysis 5.1 […]
Bloody lessons – stepping on the trap of timing thread pool
ScheduledExecutorService 1. Background Hello everyone, last week our company had a failure due to improper use of the timing thread pool. Tens of millions of orders may have been lost. Share this pit with brothers, I hope brothers will not step on it in the future! A large number of scheduled thread pools (ScheduledExecutorService) are […]
quartz implements dynamic timing tasks
We often need scheduled tasks in development, such as regularly updating some information to organize, delete and other operations in documents. These situations can be implemented using @Scheduled scheduled tasks, but once the service is started, it cannot be modified (it is scheduled on the interface) Task) Then we need to deploy a dynamic scheduled […]
[Signal] Signal processing {Timing of signal processing; kernel mode and user mode; principle of signal capture; signal processing function: signal, sigaction; reentrant function; volatile keyword; SIGCHLD signal}
1. Timing of signal processing 1.1 When does the operating system perform signal processing? First of all, we need to make it clear that the data structures for managing signals are all in the process PCB, and the process PCB belongs to the kernel data. Therefore, signal detection and processing must be performed in the […]
[Development] 1. Processing functions: timers and timing services
Article directory 1. Basic processing functions 2. Timer and scheduled services 3. Demonstration timer under KeyedProcessFunction 4. Process re-obtains the current watermark The previous API chapter is completed. Data conversion, aggregation, windows, etc. are all based on DataStream, called DataStreamAPI, as shown in the figure: At the bottom of Flink, you don’t need to define […]
[LSTM timing prediction] Data timing prediction based on long short-term memory neural network attention-LSTM with matlab code
?About the author: A Matlab simulation developer who loves scientific research. He cultivates his mind and improves his technology simultaneously. For cooperation on MATLAB projects, please send a private message. Personal homepage: Matlab Research Studio Personal credo: Investigate things to gain knowledge. For more complete Matlab code and simulation customization content, click Intelligent optimization algorithm […]
Java time analysis generates timing Cron expression tool class
Cron expression tool class CronUtil Building Cron Expressions /** * *Method Summary: Building Cron Expressions *@param taskScheduleModel *@return String */ public static String createCronExpression(TaskScheduleModel taskScheduleModel){<!– –> StringBuffer cronExp = new StringBuffer(“”); if(null == taskScheduleModel.getJobType()) {<!– –> System.out.println(“Execution cycle is not configured” );//Execution cycle is not configured } if (null != taskScheduleModel.getSecond() & amp; & amp; […]