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uglynumber
- 构造一个集合,里面的数都是丑数,那么任意取一个集合内的数,假设为k,那么2k,3k,5k,7k也是丑数,丢进集合中。因为要求第n小,那么考虑优先队列取前n小数,从1开始扩展集合,重复n次操作,最后的数便是答案。(Construct a set whose numbers are all ugly numbers, then take the number of a collection arbitrarily, assuming tha
passive_buzzer
- 无源蜂鸣器内部不带震荡源,所以如果用直流信号无法令其鸣叫,必须用2K~5K的方波去驱动它。在树莓派上实现无源蜂鸣器的鸣响(The passive buzzer does not have a shock source inside, so if the signal can not be called with a DC signal, it is necessary to drive it with the square wave o
BX-5(M)K字库控制器使用手册(完整版)
- 基于 BX-4K 字库卡的升级版,功能更强大,性能更稳定。适用于各种单双色屏基于字 符编码的显示,并且支持用户自定义图片显示,支持繁体及不规则字体的显示,更提供两种功能的 动态区供不同需求用户快速更新信息,支持串口和网口(BX-5K 系列不支持网口)两种通信方式(Based on the upgraded version of BX-4K font card, the function is more powerful and the
AD7173+FLASH CH0 5K
- 实现24位ADC转换功能,并存储于NAND型FLASH中。(The 24 bit ADC conversion function is implemented and stored in NAND FLASH.)
LAB
- Charging circuit Assume that for the charging RC circuit above Vs = 10 volts and C = 10 microfarads. Plot the voltage across the capacitor if R equals 5k ohm, 10k ohms and 20k ohms. This just means that we are going to