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} |
495 | DF | .~.~.~ Floating point {16} |
509 | .~.~.~.~ Systolic |