题目内容

边沿触发的触发器在三种触发方式的触发器中具有最好的抗干扰能力,因为边沿触发器的次态仅取决于CLK信号的上升沿↑或下降沿↓到达时刻输入信号的状态。。

A. 对
B. 错

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在边沿触发的触发器中,既有边沿JK触发器,也有边沿D触发器。

A. 对
B. 错

在边沿触发器的符号中,“>”代表上升沿触发,“<”代表下降沿触发。

A. 对
B. 错

异步输入引脚是指受时钟信号控制的引脚,同步输入引脚是指不受时钟信号控制的引脚。

A. 对
B. 错

Directions: In this section, you'll hear some long conversations. At the end of each conversation, some questions will be asked. Both the conversation and the questions will be spoken only once. After each question, choose the best answer from the four choices marked A, B, C, and D.Question 7 is based on the conversation you have just heard.

A. She is strongly for it.
B. She thinks it is of little use to the people.
C. She thinks it poses a threat to people's life.
D. She thinks it has both advantages and disadvantages.

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