Interface ckt for demo Outputs Inputs 330 +5 V PIN 0 10K PIN 4 GND GND TIP120 1K PIN 1 +9, +12 V GND

DEMO PROGRAM '-------------------------------- ' demo.bas ' ' Stamp demo program 4-28-01 (wkd) start: b2 = 0 ' for button command b4 = 100 ' sound variables b5 = 80 top: high 0 ' red led on loop1: ' check switch if in4 = 1 then loop1

action: for b3 = 1 to 5 high 0 ' red led on low 1 ' green led off pause 500 ' wait 0.5 sec low 0 ' red led off high 1 ' green led on pause 500 next b3 low 0 ' both led's off low 1

music: sound 2,(b4,20,b4,20,b4,20,b5,100) pause 250 for b3 = 0 to 127 step 10 sound 2,(25,10,b3,10) next b3 pause 500 motor: high 3 ' motor on pause 2000 ' wait 2 sec low 3 ' motor off pause 750 finish: sound 2,(120,75,50,75,120,150) goto top ' start all over again

Numbering conventions 100 ‘ decimal $64 ‘ hex %01100100 ‘ binary N = 15 N = $0F N = %00001111 All these are the same