Mechanical computation: A mechanical device is an adding machine which performs addition and displays the result based on mathematics of gear ratios. Mechanical devices can perform complex computational functions using mathematical calculations. Mechanical devices speed up tedious repetitive computation tasks that are performed by humans. Electronic computation: The movement of electrons in an electronic computing device performs the same function as the movement of gears and wheels in a mechanical computing device. The computational functions performed within an electronic circuit can be determined by mathematical relationships among the components and electron flow. Optical computation: In optical devices, a moving photon’s energy can perform computational work. A particle of light known as a photon moves at a high rate of speed. Optical discs are used to store large video files. Some input/output devices are based on optical technologies and devices.

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Chapter 2, Problem 1RQ

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Mechanical computation:

A mechanical device is an adding machine which performs addition and displays the result based on mathematics of gear ratios.

Mechanical devices can perform complex computational functions using mathematical calculations.

Mechanical devices speed up tedious repetitive computation tasks that are performed by humans.

Electronic computation:

The movement of electrons in an electronic computing device performs the same function as the movement of gears and wheels in a mechanical computing device.

The computational functions performed within an electronic circuit can be determined by mathematical relationships among the components and electron flow.

Optical computation:

In optical devices, a moving photon’s energy can perform computational work.

A particle of light known as a photon moves at a high rate of speed.

Optical discs are used to store large video files.

Some input/output devices are based on optical technologies and devices.

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