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2.可编程序的1/N计数器C182/C185 图12是BCD可预置数的1/N计数器C182逻辑图,图13是二进制可预置的1/N计投器C185逻辑图。C182和C185除了由于计数码制上的不同和电路结构的差异外,其余都是相同的。它们具有相同的引出端,相同的功能表,计数单元也是相同的。从电路结构上来看,1/N计数器包括两部分:同步减法计数器(BCD或二进制)和0输出RS触发器。同步减法计数器由4个可顶置数的TE型触发器和附加门电路组成。0输出的RS触发器是为级联而设置的。当级联
2. Programmable 1 / N Counter C182 / C185 Figure 12 is a BCD presettable 1 / N counter C182 logic diagram. Figure 13 is a binary presettable 1 / N counter C185 logic diagram. C182 and C185 are the same except for differences in counting and coding schemes and circuit structure. They have the same leads, the same menu, and the counting unit is the same. From the circuit structure point of view, 1 / N counter consists of two parts: synchronous subtraction counter (BCD or binary) and 0 output RS flip-flop. The synchronous subtraction counter consists of four TE-type flip-flops that can be top-mounted and additional gates. 0 The output RS flip-flop is set for cascading. When cascaded