startup

x=peripheral.wrap("back")
xp={
 " kJ",
 " MJ",
 " GJ",
 " TJ",
 " PJ",
}
e1=0
while(true) do
 local e=x.getEnergyStored("unknown")
 local dif=e-e1
 e1=e
 e=e/20
 dif=dif/10
 local exp=1
 local exp1=1
 while(e>1000) do exp=exp+1;e=e/1000 end
 while(dif>1000) do exp1=exp1+1;dif=dif/1000 end

 term.clear()
 term.setCursorPos(1,1)
 print("Stored Energy:   ".. e .. xp[exp])
 print("delta E:         ".. dif .. xp[exp1] .. "/s")
 sleep(0.5)
end