We present two designs for an analog circuit that can learn to detect a temporal sequence of two inputs. The training phase is done by feeding the circuit with the desired sequence and, after the training is completed, each time the trained sequence is encountered again the circuit will emit a signal of correct recognition. Sequences are in the order of tens of nanoseconds. The first design can reset the trained sequence on runtime but assumes very strict timing of the inputs. The second design can only be trained once but is lenient in the input's timing.

翻译：我们提出两种模拟电路设计,可以学习检测两个输入的时序。 培训阶段通过向电路提供所需序列进行, 培训完成后, 每次经过训练的电路再次遇到电路就会发出正确识别的信号。 序列在数十毫秒左右。 第一个设计可以在运行时重新设定经过训练的序列, 但要对输入进行非常严格的时间选择。 第二个设计只能经过一次培训, 但输入的时机比较轻 。