When a Comparator isn't available, the natural ordering of the elements is used to determine priority. If the elements don't implement the Comparable interface, then that is a run-time error.
在不能使用Comparator时，可以使用元素的自然顺序来确定优先级。
2
The output of the hysteresis comparator can be delay for a period of time, so the noise can be effectively prevented .
翻转会比没有加入迟滞效应的比较器延迟一段时间，可以有效地避免噪声影响。
3
This paper introduces a hysteresis comparator whose output can be delayed when the input signal is in rising time.