CHAPTER 3

The LCD Shield Project

An important aspect of any μC system is the ability to display data in either text or numeric form. As you learned in Chapter 2, Step 4 (Output) of the Five Program Steps is designed to display the results of a program. One of the most common methods to display μC results is to output these data to a Liquid Crystal Display or “LCD.” LCDs are inexpensive and available in many configurations, from an array of dot-matrix characters to bit-mapped color displays with built-in touch screens. As our first construction project, we chose to assemble a 16 × 2 dot-matrix LCD display.

We chose the LCD display as a first project for several reasons. First, the construction and software for this project is simple and a good ...

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