Devry University - ECET 340: Quizzes 1 - 5. Questions and Answers.

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1. Question : (TCO 1) In a typical keypad switch, bouncing occurs for how long? Student Answer: 5 to 20 ns 5 to 20 μs 5 to 20 ms 5 to 20 s Instructor Explanation: ECET340 Week 1 lecture on ke... ypad Points Received: 5 of 5 Comments: Question 2 . Question : (TCO 1) After voltage is applied to an LCD element, what must be done first? Student Answer: Initialize the LCD Blank the LCD display Send a message to the LCD Position cursor to row 1 column 1 Instructor Explanation: ECET340 Week 1 lecture on LCD Points Received: 5 of 5 Comments: Question 3 . Question : (TCO 1) For the LCD, describe the function accomplished with the RS control signal. Also, indicate whether this signal is an LCD input or LCD output. Student Answer: All signals to the LCD except for D7 are always inputs to the LCD. The RS control signal tells the LCD which register you want to work with, wither the data register or the command register. Instructor Explanation: The RS signal is an input to the LCD module. A logic LOW indicates that [Show More]

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