Chrono

s=0
m=0

start=false
on=true

mon = peripheral.wrap("top")
mon.setTextScale(3)

while on == true do

	if redstone.getInput("right") == true
	then
		s = ( s + 1 )
		if s > 59
		then
			s = 0
			m = (m + 1)
		end
	end

	if redstone.getInput("left") == true
	then
		s = 0
		m = 0
	end

	mon.clear()
	mon.setCursorPos(2,2)
	mon.write("Time lapse:")
	mon.setCursorPos(3,3)
	if s < 10
	then
		mon.write( "0" .. m .. ":0".. s)
	else
		mon.write( "0" .. m ..":" .. s)
	sleep(1)


end