A time measurement for a given computer word to pass a given point as in serial storage delay-lines. All of the bits of a word must pass through the input control gate; the beat is then the sum of all the bits times.在串行存储延迟线中，计算机字通过某指定点的一种时间度量。该字的所有位必须通过输入控制门，拍则是所有位时间之和。
