A very undesirable condition in a digital circuit, whose behavior is unpredictable because it depends entirely on which input gets to it first. Race conditions should be avoided by good design practices.

• 数字电路中的一种不良现象，因为它完全依赖于哪个输入先抵达，所以其变化状况是不可预料的。在设计时应尽量避免产生竞争的情况。