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双D触发器—74ls74介绍
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2011-08-11
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The SN74LS74A dual edge-triggered flip-flop utilizes Schottky .TTL circuitry to produce high speed D-type flip-flops. Each flip-flop has individual clear and set inputs, and also complementary Q and Q outputs.Information at input D is transferred to the Q output on the positive-going edge of the clock pulse. Clock triggering occurs at a voltage level of the clock pulse and is not directly related to the transition time of the positive-going pulse. When the clock input is at either the HIGH or the LOW level, the D input signal has no effect.
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z12oo
2013-09-24
1 回复 举报谢谢楼主 收起回复
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ben@ben
2011-08-19
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