Give an example of a computer-controlled technological system and explain how the controller keeps the system operating.

What will be an ideal response?


Examples of a computer-controlled system are washing machines, microwave ovens, cruise controls, and cell phones. All are controlled by microprocessors. Computers control the fuel injection and control sensing devices (for temperature, gases, voltage and current, and vacuum) in automobiles. In industry, computers control manufacturing processes. In aircraft, computers control many subsystems, including the ailerons,
fl aps, and elevators.

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The high-voltage, low-amperage current supplied to welding machines by commercial power lines is known as _____.

a. primary current b. commercial current c. ordinary current d. secondary current

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Through the process of _____________, the bacteria producing human insulin are grown in large liquid cultures

Fill in the blank(s) with correct word

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Symbols and abbreviations are often used together to hide information from the reader.

Answer the following statement true (T) or false (F)

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Electricity is the flow of negatively charged particles called electrons through an electrically conductive material.