Computer architecture

3) (10 points) Recall that ENIAC was a decimal system, where a single decimal digit was represented by a ring of 10 vacuum tubes. At any time only one vacuum tube was in the ON state, representing one of the 10 decimal digits. Assuming that ENIAC had the capability to have multiple vacuum tubes in the ON or/and OFF states in a ring of vacuum tubes and still used only one vacuum tube at a time in the ON state, why is this decimal representation wasteful? Explain clearly