1/
#include<reg51.h>
sbit pluse=P0^2;
main()
{
TMOD=0x20;
TH1=56;
TL1=56;
TR1=1;
whlile(1)
{
while(TF1==1);
pluse=~pluse;
TF1=0;
}
}
2/
ORG 0000H
LJMP MAIN
ORG 001BH
LJMP T1ISR
ORG 0030H
MAIN:
MOV TMOD,#00H
MOV TH1,#(8192-5000)/32;
MOV TL1,#(8192-5000) MOD 32
SETB TR1
SETB ET1
SETB EA
SJMP $
T1ISR:
CLR TR1
MOV TH1,#(8192-5000)/32;
MOV TL1,#(8192-5000) MOD 32
SETB TR1
CPL P0.2
RETI
END
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