# 💡Summary > [!Info] > 一句话说清楚 > ![image.png|1000](https://imagehosting4picgo.oss-cn-beijing.aliyuncs.com/imagehosting/fix-dir%2Fpicgo%2Fpicgo-clipboard-images%2F2026%2F01%2F28%2F13-10-58-9930cd948a2e7b6dbc9adbf36ce938b1-202601281310851-e20f66.png) # 🧩 Cues # 🪞Notes [[八股-定时任务]]的原理：硬件层的 CPU 时钟中断 ![image.png|1000](https://imagehosting4picgo.oss-cn-beijing.aliyuncs.com/imagehosting/fix-dir%2Fpicgo%2Fpicgo-clipboard-images%2F2026%2F01%2F28%2F13-19-46-715a5aff02b417cbadc0501cafd81100-202601281319031-f0e779.png)