BASIC COMPUTER CONCEPTS
HISTORY OF COMPUTERS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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manual device
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electrical machine
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mechanical device
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electro-mechanical device
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Detailed explanation-1: -A simple mechanism powered by hand. Basically, devices of this type required some sort of physical effort from the user when used. The abacus and slide rule are example of this type.
Detailed explanation-2: -The simple machines are the inclined plane, lever, wedge, wheel and axle, pulley, and screw.
Detailed explanation-3: -Mechanical devices were developed to help in automation of manual tasks. Examples of mechanical devices include the typewriter, printing press, and weaving looms.
Detailed explanation-4: -The three most basic simple machines are inclined planes, levers, and pulleys.
Detailed explanation-5: -wheel and axle The can opener has three simple machines. The turning knob on the can opener is a wheel and axle. The hinged handles form a lever, and the cutting part is a wedge.