Answer:
A bar code reader scanner captures the pattern in a barcode and sends it to the computer, where special software translates the pattern into meaningful data.
Explanation:
A barcode reader is a handheld device that captures and reads information that is contained in a bar code. It consists of a scanner, a decoder and a cable that connects the barcode reader into a computer. This scanner works by directing a beam or red light across the black and white elements of a barcode. This amount of light energy that is reflected back is measured and converted into electrical energy which is then converted into readable data by the decoder and forwarded to a computer.
Answer:
D. Pedestrians ignoring DON'T WALK signs
Explanation:
Pedestrians ignoring DON'T WALK signs is something you need to keep an eye out for near packed intersections.
Answer:
We learned that an ideal multiple access protocol has FOUR desirable
characteristics, describe them.
Explanation:
1.- Very experienced technology and easy to implement.
2.- Rigid resource management and unfit for variable traffic flows.
3.- Requires antenna duplexer for duplex transmission.
<u>Duplex</u> <em>is a term used in telecommunication to define a system that is capable of maintaining two-way communication, sending and receiving messages simultaneously.
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4.- Normally FDMA is combined with multiplexing FDD.
<u>FDMA</u> (acronym in English for Frequency Division Multiple Access) <em>is a multiplexing technique used in multiple communication protocols, both digital and analog, mainly radio frequency, and among them in mobile phones of GSM networks.
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<u>FDD</u> (Frequency Division Duplexing in English) <em>designates a duplex method in the environment of wireless telecommunications and over certain wired networks.</em>
Yes they are the leading tech innovators of the 21st century and have already made massive strides in this direction
