CPSC 121 Chapter Notes - Chapter 1: Multivibrator, Nor Gate, Nissan L Engine
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Official list of logic laws (from 2012 information booklet) 4. Propositions or logic statements are statements that are either correct or incorrect. Propositional variables can have different values depending on the circumstances, and they can be given normal identifier symbols. A = the power switch to the computer is on. B = the variable x has value greater than 10. Logic is an important tool in computing because: 3 it forms the basis for defining and evaluating boolean expressions in programming languages. it is used in the design of circuits which form the basis of digital computers. it gives a basis for program proving. These operators use propositional variables which have the value : False represented by f or 0. (generally corresponds to high digital voltage. ) (generally corresponds to low digital voltage. ) The 3 basic boolean operators - and, or and not. The various possible symbols for these operators are shown in the table:
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