* `shiftOut` = `位移输出` * `pulseIn` = `读引脚脉冲` * `millis` = `获取运行时间` * `delay` = `延时` * `delayMicroseconds` = `微秒延时` * `randomSeed` = `设置随机种子` * `random` = `取随机数` * `lowByte` = `取低字节` * `highByte` = `取高字节` * `bitRead` = `读bit` * `bitWrite` = `写bit` * `bitSet` = `设置bit` * `bitClear` = `清空bit` * `bit` = `生成bit` * `attachInterrupt` = `设置中断` * `detachInterrupt` = `取消中断` * `interrupts` = `开中断` * `noInterrupts` = `关中断` * `serialEvent` = `数据到达`