Technological Systems Unit 1 ~ How They Work Lesson 3 ~ Systems Thinking Explanation.

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Technological Systems Unit 1 ~ How They Work Lesson 3 ~ Systems Thinking Explanation

Technological systems include input, process, output, and at times, feedback. An open-loop system has no feedback path and requires human intervention, while a closed-loop system uses feedback. Systems thinking involves considering how every part relates to others.

A system can include processes as well as things. Technological systems can be connected to one another. The output from one part of a system (which can include material, energy, or information) can become the input to other parts. Such feedback can serve to control what goes on in the system as a whole.

Almost all control systems have inputs, outputs, and feedback Almost all control systems have inputs, outputs, and feedback. The essence of control is comparing information about what is happening to what people want to happen and then making appropriate adjustments. This procedure requires sensing information, processing it, and making changes. In almost all modern machines, microprocessors serve as centers of performance control.

2. Concept mapping can be used to graphically display information and relationships among components of a system. Video Cassette Recorder Inputs Processes Outputs Power cord Power AV signal Blank cassette Consists of Records to tape FF/RW Playback Programmable controls Display of time and channel AV from recorded tape Display of tape progress Standard AC Plug Plastic shell Spring-loaded Door Mylar tape Subsystems

Classified Intelligence on Kids’ Behavior Saint Nicholas Dutch Beard White Horse Saint Spain Birthday Bad Kids Good Kids Presents Classified Intelligence on Kids’ Behavior Book Poles North Pole Santa Claus has celebrated by is not the same as rides lives in is gives to of contains lives at don’t live at

Cell Phone Communication INPUT Network PROCESS OUTPUT Voice Message Physical Phone Towers Transmit Signal to Tower Text Message Transmit Signal to Phone Internet Data Transmitter Signal to Wireless Access Point Power System Wireless Access Point Receiver 1. Battery 2. Charger