708 / | HD | ELECTRICAL COMPUTERS: ARITHMETIC PROCESSING AND CALCULATING |
800 | DF | ELECTRICAL ANALOG CALCULATING COMPUTER {1} |
801 | DF | .~ Particular function performed {15} |
823 | DF | .~.~ Integrator {10} |
833 | DF | .~.~.~ Amplifier with additonal feedback loop {1} |
834 | .~.~.~.~ Additional R/C feedback loop |