jb nca,ys1
mov a,43h
movc a,@a+dptr
anl p1,#01h
orl p1,a
setb p3.2
ys1: lcall ms10
ajmp disp
ct: mov dptr,#tab
clr p3.2
mov a,42h
movc a,@a+dptr
anl p1,#01h
orl p1,a
jb ncb,xsd
setb p3.3
lcall ms10
xsd: acall key
clr p3.3
jb nca,ys2
mov a,43h
movc a,@a+dptr
anl p1,#01h
orl p1,a
setb p3.2
ys2: lcall ms10
ajmp disp
timon:;定时计数中断子程序--
setb rs0
push psw
push aCC
mov tl1,#46h
mov th1,#76h
setb tr1
inc 40h
mov r0,40h
cjne r0,#8,tim
mov 40h,#00h
cpl p1.0
t11: inc 41h
mov r0,41h
cjne r0,#60,tim
mov 41h,#00h
mov r0,42h
cjne r0,#00,tia
ajmp tib
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