AI-3LAW OF UNIONA term ORed with 1 equals 1; a term ORed with 0 equals that term; A+1 = 1, A + 0 = 0.LEAST SIGNIFICANT (LSD)The digit which has the least effect on the value of a number.LOGICThe science of reasoning; the development of a reasonable or logical conclusion based on knowninformation.LOGIC FAMILYA group of logic circuits based on specific types of circuit elements (DTL, TTL, CMOS, andso forth).LOGIC GATESDecision-making circuits in computers and other types of equipment.LOGIC POLARITYThe polarity of a voltage used to represent the logic 1 state.LOGIC SYMBOLStandard symbol used to indicate a particular logic function.MINUENDThe number from which another number is subtracted.MIXED NUMBERRepresents one or more complete units and a portion of a single unit.MODULUSThe number of different values that a counter can contain or display.MOST SIGNIFICANT DIGIT (MSD)The digit which if changed will have the greatest effect on the value of anumber.NAND GATEAn AND gate with an inverted output. The output is LOW when all inputs are HIGH, and HIGHwhen any or all inputs are LOW.NEGATIVE LOGICThe voltage representing logic state 1 is more negative that the voltage representing a logicstate 0.NEGATORSee inverter.NOR GATEAn OR gate with an inverted output. The output is LOW when any or all inputs are HIGH, andHIGH when all inputs are LOW.NOT CIRCUITSee inverter.NUMBERA symbol used to represent a unit or a quantity.OCTAL SYSTEMThe base 8 number system using 0 through 7 as the symbols.OR GATEA logic circuit which produces a HIGH output when one or more inputs is/are HIGH.PARALLEL DATAEach bit of data has a separate line and all bits are moved simultaneously.PARALLEL REGISTERA register that receives, stores, and transfers data in a parallel mode.POSITIONAL NOTATIONA method where the value of the number is defined by the symbol and the symbol’sposition.POSITIVE LOGICThe voltage representing logic state 1 is more positive than the voltage representing a logicstate 0.POWER OF A NUMBERThe number of times a base is multiplied by itself. The power of a base is indicatedby the exponent; that is, 10^{3} = 101010.

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