主题：[求助]信号过滤

variable:n1=0,n2=0,n3=0;
if kc1 and n1=0 then begin
 buy.....;
 n1:=1;
end

if kc2 and n2=0 then begin
 buy.....;
 n2:=1;
end

if kc3 and n3=0 then begin
 buy.....;
 n3:=1;
end

if pc1 or pc2 or pc3 then begin
 sell...;
 n1:=0;
 n2:=0;
 n3:=0;
end