Nezbro

local monitor = peripheral.wrap("top")
monitor.clear()
while true do
  while rs.getInput ("front")
   and  rs.getInput ("back")
              == true do
  monitor.setTextScale(2)
  monitor.setCursorPos(11,3)
  monitor.write("Hello")
  sleep(5)
  monitor.clear()
end
  while rs.getInput ("front",true) do
  monitor.setTextScale(2)
  monitor.setCursorPos(11,3)
  monitor.write("Front")
  sleep(5)
  monitor.clear()
end
  while rs.getInput ("back",true) do
  monitor.setTextScale(2)
  monitor.setCursorPos(11,3)
  monitor.write("Back")
  sleep(5)
  monitor.clear()
end
  if not rs.getInput("front","back") then
  monitor.setTextScale(2)
  monitor.setCursorPos(9,3)
  monitor.write("No Signal")
  sleep (5)
  monitor.clear()
end
end