发射器和接收器内装有光源和所有电子元件和控制元件。
The transmitter-receiver housing contains the light source and all electronic and control functions .
发射器和接收器内装有光源和所有电子元件和控制元件。
The transmitter-receiver housing contains the light source and all electronic and control functions.
利用目前使用的微处理器at89c 51作为控制元件设计了一种电子密码锁。
Used present microprocessor AT89C51 as control part, designed a electronic trick lock. It can be set up some cipher code, changed many times and kept cipher code.
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