The application then registers channels ( file descriptors) and interested operations to the selector with a register() call on the channel. 然后,应用程序用register()调用向选择器注册通道(文件描述符)和感兴趣的操作。
The voltage detector includes several sub-systems such as a multi-path selector, a buffer amplifier, a comparator, a 12-bit SAR ADC, a shift register and a status bar. 该电压检测器主要包括多路选通器、缓冲放大器、比较器、12位逐次逼近数模转换器、移位寄存器、状态机等部分。