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April 15, 2023 1. Describe the advantages of using digital signals instead of analog signals to transmit information. Digital signals are more efficient, less noisy, have a higher informational capacity, travel as electrical pulses, and are more dependable with less wave interference. 2. Describe the importance and reliability of systems that use digital signals to store information. (Include the advantages of storing information digitally, as opposed to physical copies.) Faster speeds and much more information storage offered by digital signals improved communications by preventing data loss due to wave interference. 3. Describe three instances of digital transmission and storage in your everyday life. Be sure to explain how you know data transmission or storage is occurring in each instance. An example is turning on the radio. I know that data transfer takes place since the radio signal is a very fast-moving current. This field is broadcast by a transmitter via an antenna, and a receiver picks it up and converts it into the audio you hear on a radio. Another illustration is when you text or call with your friends. I am aware that this is an example of a digital transmission since when a text message is written, it is transmitted in binary across a user-specific radio frequency. A neighboring cell tower picks up the

signal, which instructs another tower close to the intended recipient to transmit the data. 4. Explain how radio waves and digital signals will store and transmit this assignment to your instructor. Digital signals are used to transmit the file containing my assignment from my PC to the vlacs server. Following that, the teacher gets the file from the vlacs server, grades it, and sends it back to me via digital signals. 5. Describe how wave behavior and interactions can affect the quality of a signal received by a mobile device. When listening to the radio in your car while driving through a tunnel, for instance, the radio signal will be obstructed by the tunnel and interfered with until you exit the tunnel. Physical obstruction will interfere with communications. 6. A medical office is planning to convert to an electronic database to store patient information. What are the pros and cons to making changes in this form of storage of personal medical information instead of written physical files? Provide evidence based on your knowledge of digital storage to support your reasoning. The ability to search for information is one of the biggest advantages of entering patient data into an electronic database. Additionally, it is much simpler to deliver to different doctors and create several copies for backup in various places. One drawback of using an electronic database is that files can be stolen from anyone on the internet, as opposed to a physical database where files could only be taken from someone nearby.

7. As seen in the lesson video, solar photovoltaic technologies help provide clean electrical energy. Using the video animation as a guide, diagram and label the absorption of photons and production of electrons (photoelectric effect) used in solar PV systems. Include a screen shot or picture of your diagram below.

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