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Analog computer
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A page from the Bombardier's Information File (BIF) that describes the components and controls of the Norden bombsight. It was a highly sophisticated
TR-10 desktop analog computer of the late 1960s and early 1970s
TR-10 desktop analog computer of the late 1960s and early 1970s
The Antikythera mechanism, dating between 150 and 100 BC, was an early analog computer.
The Antikythera mechanism, dating between 150 and 100 BC, was an early analog computer.
Analog computing machine at the Lewis Flight Propulsion Laboratory c. 1949.
Analog computing machine at the Lewis Flight Propulsion Laboratory c. 1949.
Slide rule
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A slide rule is a hand-operated mechanical calculator consisting of slidable rulers for evaluating mathematical operations such as multiplication, division, exponents, roots, logarithms, and trigonometry. It is one of the simplest analog computers.
Typical ten-inch (25 cm) student slide rule (Pickett N902-T simplex trig)
Typical ten-inch (25 cm) student slide rule (Pickett N902-T simplex trig)
Cursor on a slide rule
Cursor on a slide rule
This slide rule is positioned to yield several values: From C scale to D scale (multiply by 2), from D scale to C scale (divide by 2), A and B scales
This slide rule is positioned to yield several values: From C scale to D scale (multiply by 2), from D scale to C scale (divide by 2), A and B scales (multiply and divide by 4), A and D scales (squares and square roots).
A 7-foot (2.1 m) teaching slide rule compared to a normal-sized model
A 7-foot (2.1 m) teaching slide rule compared to a normal-sized model