@ device PIC16F877
define osc 4
define adc_bits 8
main:
trisb =$00
trisa =$ff
adcon1 = 7
lamp var portb.0
sw1 var porta.0
lamp=0
while(1)
if(!sw1) then
pause 10
toggle lamp
while(!sw1):wend
endif
pause 10
wend
end