JK触发器及其输入信号波形如图所示,那么,在t=t0和t = t1时刻,输出Q分别为: A. Q(t0)= 1,Q(t1)=0 B. Q(t0)...

作者: tihaiku 人气: - 评论: 0
问题 JK触发器及其输入信号波形如图所示,那么,在t=t0和t = t1时刻,输出Q分别为: A. Q(t0)= 1,Q(t1)=0 B. Q(t0)= 0,Q(t1)=1 C. Q(t0)= 0,Q(t1)=0 D.Q(t0)= 1,Q(t1)=1
选项
答案 B
解析 提示:图示电路是下降沿触发的JK触发器,RD是触发器的异步清零端,由触发器的逻辑功能分析即可得答案。
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  • 消息: [程序异常] : MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
  • 文件: /twcms/kongphp/cache/cache_redis.class.php
  • 位置: 第 85 行
    <?php echo 'KongPHP, Road to Jane.'; ?>