数字输入可以和外部安全联锁开关联结在一起。
The digital input can be used in conjunction with an external safety interlock switch.
根据计算机外部设备鼠标的控制原理，介绍了计算机联锁系统中人机会话层多鼠标同时控制的实现方法。
Based on the control theory of mouse of computer peripheral equipment, the paper introduces how to realize multi-mouse control in MMI-layer of computer interlocking system.
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