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触发器是最基本的逻辑单元之一,是一种双稳态电路,与其他逻辑电路配合可广泛应用于计算机、数字仪表、数控群控、通信设备和工业自动化线路中.下面就以各种应用为例作一些介绍.一、B-S触发器R-S触发器是最简单的一种触发器,它可由双两输入端的与非门或双两输入端的或非门将输入输出交叉耦合组成.采用与非门组成的R-S触发器由下降沿(后沿)触发,以使触发器置1或置0.采用或非门组成的R-S触发器由上升沿(前沿)触发,可以使触发器置1或置0.根据输入脉冲的极性,合理采用不同类型的R-S触发器,可以满足逻辑设计的要求.
Trigger is one of the most basic logic unit, is a bistable circuit, with other logic circuits can be widely used in computers, digital instrumentation, group control, communications equipment and industrial automation lines. Here are a variety of Application as an example for some introduction .A, BS flip-flop RS flip-flop is the simplest kind of flip-flop, which can be double-ended input with non-gate or dual-input or non-gate input and output cross-coupling. The gate composed of RS flip-flops is triggered by a falling edge (trailing edge) to set the flip-flop to 1 or 0. The RS flip-flop, which is composed of NOR gates, is triggered by a rising edge (leading edge) to set or flip the flip-flop 0. According to the polarity of the input pulse, reasonable use of different types of RS flip-flop, to meet the logic design requirements.