US PATENT SUBCLASS 708 / 490
.~.~ Arithmetical operation


Current as of: June, 1999
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708 /   HD   ELECTRICAL COMPUTERS: ARITHMETIC PROCESSING AND CALCULATING

100  DF  ELECTRICAL DIGITAL CALCULATING COMPUTER {10}
200  DF  .~ Particular function performed {26}
490.~.~ Arithmetical operation {27}
491  DF  .~.~.~> Residue number
492  DF  .~.~.~> Galois field
493  DF  .~.~.~> Multi-valued
494  DF  .~.~.~> Incremental mode
495  DF  .~.~.~> Floating point {16}
517  DF  .~.~.~> Logarithmic format
518  DF  .~.~.~> Variable length
519  DF  .~.~.~> Negative radix
520  DF  .~.~.~> Matrix array
521  DF  .~.~.~> Pipeline
522  DF  .~.~.~> Systolic
523  DF  .~.~.~> Multiplication followed by addition (i.e., x*y+z)
524  DF  .~.~.~> Multiple parallel operations
525  DF  .~.~.~> Status condition/flag generation or use
530  DF  .~.~.~> Error detection or correction {4}
540  DF  .~.~.~> Cathode-ray tube
541  DF  .~.~.~> Contact-making device
542  DF  .~.~.~> Radix point control
550  DF  .~.~.~> Compensation for finite word length {2}
603  DF  .~.~.~> Sum of products generation
604  DF  .~.~.~> All four basic functions
605  DF  .~.~.~> Evaluation of root
606  DF  .~.~.~> Evaluation of powers
607  DF  .~.~.~> Multiplication of matrices
620  DF  .~.~.~> Multiplication {4}
650  DF  .~.~.~> Division {3}
670  DF  .~.~.~> Addition/subtraction {11}


DEFINITION

Classification: 708/490

Arithmetical operation:

(under subclass 200) Subject matter wherein numerical quantities form the elements of the calculation, including the fundamental operations of arithmetic (addition, subtraction, multiplication, comparison, and division).