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@@ -72,8 +72,8 @@ When no key is pressed, the 100k resistor will pull down the CPU pin to 0V.
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When a key is pressed, the CPU pin will rise up to a certain voltage, according to the following chart. Let's assume that
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Vcc = 3.3V.
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-| key label | | value |
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-| --- | --- | --- |
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+| key label | calculation | value |
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+| ---- | ---- | ---- |
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| # | 3.3 * 100k/100k = | 3.30V |
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| 0 | 3.3 * 100k/103.3k = | 3.19V |
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| * | 3.3 * 100k/106.6k = | 3.10V |
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@@ -266,7 +266,7 @@ can happen.
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[Here](keyboard.c) is some example code to illustrate this decode; in C;
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-look for the symbol **FOUR_PIN**.
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+look for the symbol **FOUR_PIN**. Here is a working prototype. 
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### Keyboard Debounce <a name="bounce" />
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