Manipulating logical expressions, Computer Engineering

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Digital circuits also manipulate logicalexpressione.g. IF account is in credit THEN allow phoneto make calls.So a digital circuit must determine if somethingis TRUE or FALSE. Normally logic level 1 isused to represent TRUE and logic level 0 represents FALSE But it could be 0 for TRUE and 1 for FALSE.There are two alternative 'codings'. 


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