PULSE(a,b,c)ʾbʱ̿ʼͨһcʱôʱ䣬a/DTôֵ

PULSE(0.5,5,5)ģʱ䲽Ϊ0.25DT=0.25ʾ

ڵ5ʱ㣨b=5ͻȻӿһΪa/DT=0.5/0.25=2ҪֵΪ2룬Ҫʱ䳤Ϊc=5
һDT=0.25ģ̣Ҫܹc/DT=5/0.25=20λģʱ䣬ŵɣʵ֣