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| B39941-B7700-B610资料 | |
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B39941-B7700-B610 PDF Download |
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File Size : 116 KB
Manufacturer: Description:The three Mode-Select Inputs Ka, Kb and Kc determine the modulus (divide-by number) of the first and last counting sections in accordance with the truth table. Every time the first (fastest) counting section goes through one cycle, it reduces by 1 the number that has been preset (jammed) into the three decades of the intermediate counting section an the last counting section, which consists of flip-flops that are not needed for opening the first counting section. For example, in the 2 mode, only one flip-flop is needed in the first counting section. Therefore the last counting section has three flip-flops that can be preset to a maximum count of seven with a place value of thousands. If 10 is desired for the first section, Ka is set high, Kb high and Kc low. Jam inputs J1, J2, J3, and J4 are used to preset the first counting section and there is no last counting section. The intermediate counting section consists of three cascaded BCD decade (10) counters presettable by means of Jam Inputs J5 through J16. |
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| 1PCS | 100PCS | 1K | 10K | ||
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型 号：B39941-B7700-B610 厂 家： 封 装：08＋ 批 号：12000 数 量： 说 明：原装现货 |
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