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计数器可以用来显示产品的工作状态,一般来说主要是用来表示产品已经完成了多少份的折页配页工作。CD4518双2——10进制同步计数器,是常用的计数器器电路,主要由P沟道、N...
计数器可以用来显示产品的工作状态,一般来说主要是用来表示产品已经完成了多少份的折页配页工作。CD 4518双2——10进制同步计数器,是常用的计数器器电路,主要由P沟道、N沟道增强型MOS管以互补方式组成基本单元,每个计数器由四级D型触发器组成四位BCD同步计数器,二个计数器各自有独立的时钟输出端CP,使能端E和清除端CR。当时钟由CP端输入时,时钟脉冲的正向边沿触发计数器计数(此时E=H),当时钟由E端输入时,时钟脉冲的负向边沿触发计数器计数(此时CP=L)。在CR=H时不管CP和E输入端是什么状态,计数器的所有输出均为L,该电路结构和性能均与美国RCA公司的CD 4518相一致。
本文介绍了CD 4518的原理、参数和工作条件,重点介绍了它的设计规则和设计版图,并且对它的工作原理和工作模式做了详细的分析。
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本文介绍了CD 4518的原理、参数和工作条件,重点介绍了它的设计规则和设计版图,并且对它的工作原理和工作模式做了详细的分析。
要人工翻译的,不要翻译器翻译的!!!!!!!!! 展开
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The counter may use for to demonstrate that the product the active status, generally speaking is mainly uses for to express the product already completed how many shares to fold printed book-sheets into pages matches the page work. The CD 4518 pairs 2--10 enter the system synchronous counter, is the commonly used counter electric circuit, mainly by the P trench, N the trench enlargement mode MOS tube is composed the elemental area by the supplementary way, each counter is composed four BCD synchronous counter by four level of D triggers, two counters have independence clock out-port CP respectively, enables to carry E and the elimination carries CR. When clock by CP end input, clock pulse forward border flip-flop number counting (this time E=H), when clock by E end input, clock pulse negative border flip-flop number counting (this time CP=L). When CR=H, no matter CP and the E input end is any condition, counter all outputs are L, this circuit structure and performance with American RCA Corporation's CD 4518 consistent. This article introduced the CD 4518 principles, the parameter and the working condition, introduced its design rule and the design domain with emphasis, and has made the detailed analysis to its principle of work and the working pattern.
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Counter can be used to display the working status of products in general is mainly used to indicate how many products have completed the page with the work of folding. CD 4518 双 2 - 10 synchronous counter, the counter circuit is used mainly by the P-channel, N-channel enhancement-type MOS control the basic unit composed of a complementary way, each counter by the four D-type flip-flop 4 synchronous BCD counters, two counters have separate clock output CP, so to clear the terminal end of E and CR. When the clock input from the CP side, the clock pulse positive edge-triggered counter count (in this case E = H), the clock input from the E side, the negative clock edge triggered counter count (now CP = L). In CR = H, and when the CP E regardless of what state the input, output of the counter were all L, the circuit structure and performance are the company with the U.S. RCA CD 4518 is consistent.
参考资料: 谷歌翻译
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