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电子测量设备中常常要用到可逆计数电路,特别在一些需要实时加减测量的仪器设备中用得较多。但可逆计数电路的设计好坏又直接影响到这些测量设备的可靠性。为此,我们对二进制可逆计数电路进行了实验研究,经过分析推荐一个实用电路。组成可逆计数电路的器件,一是采用中规模数字集成器件,如TTL的T_(215)等,二是用小规模数字集成器件的JK触发器和门电路。其常用的电路如图1所
Electronic measuring equipment often use reversible counting circuit, especially in some need real-time addition and subtraction of measurement equipment used more. However, the design of reversible counting circuit has a direct impact on the reliability of these measuring equipment. For this reason, we carried on the experiment research to the binary reversible counting circuit, after the analysis recommends a practical circuit. Reversible counting circuit components, first, the use of large-scale digital integrated devices, such as TTL T_ (215), the second is the use of small-scale digital integrated devices JK flip-flop and gate. The commonly used circuit shown in Figure 1