AI-1APPENDIX IGLOSSARYADDENDA number to be added to an augend.ADDITIONA form of counting where on quantity is added to another.AND GATEA logic circuit in which all inputs must be HIGH to produce a HIGH output.ASSOCIATIVE LAWA simple equality statement A(BC) = ABC or A+(B+C) = A+B+C.AUGENDA number to which another number is to be added.BASEThe number of symbols used in the particular number system.BCD (BINARY CODED DECIMAL)A method of using binary digits to represent the decimal digits 0 through9.BINARY SYSTEMThe base 2 number system using 0 and 1 as the symbols.BOOLEAN ALGEBRAA mathematical concept based on the assumption that most quantities have two possibleconditionsTRUE and FALSE.BOOLEAN EXPRESSIONA description of the input or output conditions of a logic gate.BORROWTo transfer a digit (equal to the base of the number system) from the next higher order column for thepurpose of subtraction.CARRYA carry is produced when the sum of two or more numbers in a vertical column equals or exceeds thebase of the number system in use.CLOCKA circuit that generates timing control signals in a computer or other type of digital equipment.COMMUTATIVE LAWThe order in which terms are written does not affect their value; AB = BA, A+B =B+A.COMPATIBILITYThe feature of logic families that allows interconnection of circuits without the need foradditional circuitry.COMPLEMENTSomething used to complete something else.COMPLEMENTARY LAWA term ANDed with its complement is 0, and a term ORed with its complement is1; A A = 0, A + A = 1.CONVERSIONTo change a number in one base to its equivalent in another base.COUNTERA device that counts.D FLIP-FLOPStores the data bit (D) in conjunction with the clock input.DECADE COUNTERCounter from 0 to 10_{10}in base 2, then resets.DECIMAL POINTThe radix point for the decimal system.

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