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Line 1: '''Direct algebraic logic (D.A.L.)''' is a method for entering equations on scientific calculators which allows symbols and numbers to be entered as they are written. [[Sharp Corporation\|SHARP]] introduced it in [[1992]]. Today DAL is used almost with every scientific calculator ~~except very simple calculators and~~ those which use [[Reverse Polish Notation]]. Example: <math>\sin 30 \times \cos 30</math>

Calculator input methods: Difference between revisions