The accuracy and performance of these devices are vital to the proper operation of the computer system 对该部分设备操作的准确性对计算机系统是否工作正常非常关键。
In paper tape equipment , a tape punch operated by a keyboard , by received signals or by another unit 在纸带设备中,用键盘或接收到的信号或由另一台设备操作的纸带穿孔机。
In the system of generate operate order through select device from wiring diagram , it divide operate regular into several layer according to importance , the system not only prevent mistake of prime equipment operation but also guarantee exactness of second equipment from a certain degree 在点图开票中按规则的重要程度分层表示操作规则,既防止一次设备误操作,又从一定程度上确保二次设备操作的正确性。