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Jevons' Logic Piano in the Sydney Powerhouse Museum in 2006. A logical machine or logical abacus is a tool containing a set of parts that uses energy to perform formal logic operations through the use of truth tables. Early logical machines were mechanical devices that performed basic operations in Boolean logic.
The abacus system of mental calculation is a system where users mentally visualize an abacus to carry out arithmetical calculations. [1] No physical abacus is used; only the answers are written down. Calculations can be made at great speed in this way.
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An abacus (pl.: abaci or abacuses), also called a counting frame, is a hand-operated calculating tool which was used from ancient times in the ancient Near East, Europe, China, and Russia, until the adoption of the Hindu–Arabic numeral system. [1] An abacus consists of a two-dimensional array of slidable beads (or similar objects). In their ...
The machine has an infinite abacus, an infinite number of counters (pebbles, tally sticks) initially at a special location S. The machine is able to do one operation: Take from location X as many counters as there are in location Y and transfer them to location Z and proceed to instruction y.
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A System of Logic-- A priori and a posteriori-- Abacus logic-- Abduction (logic)-- Abductive validation-- Academia Analitica-- Accuracy and precision-- Ad captandum ...