An act designed to include several discrete items of information in one unit of information. 把若干离散的信息项组合到一个信息单位中的动作。
An electronic circuit or mechanical device capable of assuming either of two stable states,especially a computer circuit used to store a single bit of information. 触发器，双稳态多谐振荡器一种能采用两种稳定状态中任一种的电子电路或机械装置，尤指用于储存单个信息单位的计算机电路。
A topic is a unit of information that describes a single task, concept, or reference item. 主题是用来描述单一任务或概念或引用项的信息单元。
