This type of counter is called a parallel-carry synchronous counter . 这种计数器称为并行进位同步计数器。
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Since the above inequality is not satisfied a serial-carry synchronous counter can not be used . 因上述不等式不能成立，所以不能采用串行进位同步计数器。
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Semiconductor integrated circuits . detail specification of type jc4520 cmos dual 4 - bit binary up - counters 半导体集成电路. jc4520型cmos双4位二进制同步计数器详细规范
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Detail specification for electronic components . semiconductor integrated circuit ct54161 ct74161 4 - bit synchronous binary counter direct clear 电子元器件详细规范.半导体集成电路ct54161 ct74161型4位二进制同步计数器异步清除
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A reference count for synchronised entries and to - do lits which prevents them from being deleted while they are still needed for synchronisation 同步计数器：一个用来防止同步实体或者待办列表条目在仍需要使用的情况下被删除的同步引用计数器。
