V2EX hold time

Hold Time

释义 Definition

hold time:常指“等待保持时间/等待时长”。在不同语境中含义略有差异:

  1. 客服/电话系统:来电者被转入等待(hold)后需要等待的时间。
  2. 数字电路:在时钟触发沿之后,输入数据必须继续保持稳定的最短时间(与 setup time 并列的时序参数)。

发音 Pronunciation(IPA)

/hold tam/

例句 Examples

The hold time is about five minutes right now.
现在的等待时长大约是五分钟。

If the data changes before the hold time is met, the flip-flop may enter metastability and the system can fail intermittently.
如果数据在满足保持时间之前就发生变化,触发器可能进入亚稳态,系统会出现间歇性故障。

词源 Etymology

hold 源自古英语 healdan,有“握住、保持、使停留”的意思;time 源自古英语 tīma,指“时间”。合在一起,hold time 字面即“保持的时间/停留的时间”,在技术与服务场景中分别引申为“等待时长”与“(信号)保持稳定的时间要求”。

相关词 Related Words

文学与作品 Notable Works

  • Digital Design and Computer Architecture(David Money Harris, Sarah L. Harris)在讲解时序约束与触发器行为时使用并解释 hold time
  • CMOS VLSI Design: A Circuits and Systems Perspective(Neil H. E. Weste, David Harris)在数字电路时序分析中讨论 setup/hold time
  • Computer Organization and Design(David A. Patterson, John L. Hennessy)涉及同步电路与时序概念时常出现 hold time 等术语。
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