ECET 340 Week 1 Quiz

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1. (TCO 1) A 4 x 3 keypad consists of 2. (TCO 1) Which of the following is not an advantage of an LCD compared to an LED display? 3. (TCO 1) For the LCD, describe the function accomplished with the R/W~ control signal. Also, indicate whether this signal is an LCD input or LCD output 4. (TCO 1) In your own words, explain techniques to debounce a keypad switch (provide at least two methods). How does switch bounce occur? 5. (TCO 1) The LCD has four control lines. What functions are served by the RS and E control signals?

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1. (TCO 1) A 4 x 3 keypad consists of 2. (TCO 1) Which of the following is not an advantage of an LCD compared to an LED display? 3. (TCO 1) For the LCD, describe the function accomplished with the R/W~ control signal. Also, indicate whether this signal is an LCD input or LCD output 4. (TCO 1) In your own words, explain techniques to debounce a keypad switch (provide at least two methods). How does switch bounce occur? 5. (TCO 1) The LCD has four control lines. What functions are served by the RS and E control signals?

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