| 术语 | logic probe |
| 释义 | logic probe 逻辑探头［针］,逻辑笔;［逻辑试探具］ 1. A logic-testing tool easily shared in the lab and one that can also handle field-service requirements. Logic probes use one or more lamps to indicate whether a point in a digital signal path is at a logic 1, a logic 0, or is toggling between these levels. 一种逻辑测试工具,能在实验室中使用,也可用于现场测试。逻辑探头用一个或多个指示灯来 指示在逻辑信号通路中某一点上的状态, 是“1”、是“0”,还是在这两种状态之间来回翻转。 2. A hand-helditem of test equipment for use in digital electronic systems. The probe displays on a LED indicator the state (0 or 1) of any circuit node.DC power must be supplied to the logic probe. The probe tip can be applied to any convenient test point in the circuit, and the LED indicates the logic state at that point, e.g.,(a) bright intensity—logic 1;(b) zero intensity—logic 0;(c) dim intensity—floating (high impedance state). Normally a different logic probe is required for use in TTL and CMOS circuits, due to the difference in signal characteristics. 一种手持式数字电子系统所用的测试设备,其探针上的光发射二极管指示器显示出电路节点的状 态(0或1),其逻辑笔上必须加直流电源。 探针针尖可以触到电路中任意一个方便的测试点上,发光二极管(LED)指示该点的逻辑状态： (1)明亮——逻辑1;(2)不亮——逻辑0;(3)暗亮——浮动态(高阻态)。一般 而言,TTL和CMOS电路由于信号特性不同，所用的逻辑笔也不同。 |
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