708 / | HD | ELECTRICAL COMPUTERS: ARITHMETIC PROCESSING AND CALCULATING |
100 | DF | ELECTRICAL DIGITAL CALCULATING COMPUTER {10} |
200 | DF | .~ Particular function performed {26} |
490 | DF | .~.~ Arithmetical operation {27} |
650 | DF | .~.~.~ Division {3} |
653 | .~.~.~.~ Binary {2} | |
654 | DF | .~.~.~.~.~> Multiplication by reciprocal |
655 | DF | .~.~.~.~.~> Repeated subtraction {1} |