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Revision as of 08:22, 7 June 2010
Where to get Sliderule
About Abacus
"The slide rule also known colloquially as a slipstick, is a mechanical analog computer." This Activity implements a basic slide rule with C, D, A, and L scales and can be used for multiplication, division, roots, addition and subtraction.
The C and D scales are used for multiplication and division.
The A and D scales are used for squares and square roots.
The L scales are used for addition and subtraction.
A nice discussion of the slide rule is found here [1]
The toolbars
From left to right:
- project-toolbar button
- C scale (multiplication and division)
- A scale (square and square root)
- L scale (addition and subtraction)
- stop button not shown
How to use a slide rule
Examples: In the gallery below, several simple examples are shown.
Multiplication
To multiply...
Example: 4+3+5+19+24=55