ARM is the world’s leading semiconductor IP company with 22 Million processors entering the market each day.
2013-11-04 20:20:01
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一种异步串行通信接口信号.RS485是一种通信接口,里面的信号类似于一种差分信号,两个电平的差值大概是200mV左右,抗干扰性能比较好。
2024-05-12 12:50:01
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