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暂存器是数字系统中不可缺少的一种电路元件,在电子计算机和一般自动控制仪器仪表中常被来用,在系统中用作电路输出的暂时记忆。 图1是系列机联合设计介绍的暂存器的逻辑图,其中C_p是控制端,Q是数据输出端,Q是它的反码输出,其数据输入端D扩展成九个端子 D=D_1D_2D_3+D_4D_5+D_9D_(10)+D_(11)D_(12) 在C_p为高电平时电路不动作,C_p为低电平时Q跟随D发生变化,当C_p再次变为高电平时Q维持在正跳变时D的状态,不受随后D变化的影响,其波形如图2所示。
Register is an indispensable digital circuit components, computer and general automatic control instrumentation is often used in the system as a temporary output of the circuit memory. Figure 1 is a logic diagram of the register described in the joint design of the series machine, where C_p is the control terminal, Q is the data output terminal, Q is its inverted output, its data input terminal D is expanded into nine terminals D = D_1D_2D_3 + D_4D_5 + D_9D_10 + D_11 D_12 The circuit does not act when C_p is high, Q follows D when C_p is low, and Q maintains a positive transition when C_p goes high again When the state of D, regardless of the subsequent changes in D, the waveform shown in Figure 2.