OK, my suggestion is the electric meter.
But not the one IC² got already, that shows how much EUs go through a cable,no
I think about a cable or block with its own GUI that shows the EUs that EVER go trough it
for example: if you have a reactor connected to this cable/block that produce 40 EU/t and run it for 324 ticks then its shows that overall 12960 EUs run trough it
recipe :
[N] [N]
[D] [D]
[N] [N]
[N] : Nothing
[D] : Detector Cable
and maximum EU/t is 2048
And, i'm sorry for my english. my native language is German so please be understanding
Thanks for reading