| 708 / | HD | ELECTRICAL COMPUTERS: ARITHMETIC PROCESSING AND CALCULATING |
| 800 | DF | ELECTRICAL ANALOG CALCULATING COMPUTER {1} |
| 801 | DF | .~ Particular function performed {15} |
| 835 | DF | .~.~ Multiplication {7} |
| 838 | ![]() | .~.~.~ Having charging or discharging of energy storage device |