The universal classical logic gate, the Toffoli gate, is reducible to the Deutsch gate, D ( \ begin { matrix } \ frac { \ pi } { 2 } \ end { matrix } ), thus showing that all classical logic operations can be performed on a universal quantum computer.
32.
The implementation of reversible computing thus amounts to learning how to characterize and control the physical dynamics of mechanisms to carry out desired computational operations so precisely that we can accumulate a negligible total amount of uncertainty regarding the complete physical state of the mechanism, per each logic operation that is performed.
33.
We have instructions for a variety of arithmetic and logic operations-for moving numbers from one memory location to another, for testing whether two numbers are equal, or one is greater than the other and for fetching the next instruction from someplace other than the next location in memory ( a " jump " instruction ).
34.
Landauer's principle demonstrates the reality of this by stating the minimum energy " E " required ( and therefore heat " Q " generated ) by an ideally efficient memory change or logic operation by irreversibly erasing or merging " N h " bits of information will be " S " times the temperature which is
35.
This function _ a " not " operator _ is one of three fundamental logic operations that underlie all computer calculations . ( The other two operations are " and " and " or "; the " and " operator compares whether two statements are both true; the " or " operator determines if at least one statement is true .)
36.
Principal components of a CPU include the arithmetic logic unit ( ALU ) that performs arithmetic and logic operations, processor registers that supply operands to the ALU and store the results of ALU operations, and a control unit that orchestrates the fetching ( from memory ) and execution of instructions by directing the coordinated operations of the ALU, registers and other components.
37.
:: : Umm . . . as the original questioner seems to be unaware of this order of precedence in logic operations, how do we know they have not misapplied the order of operations in a previous step in their work, and mistakenly reached \ neg Q \ and T \ or Q instead of \ neg Q \ and ( T \ or Q )?
