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@@ -1,6 +1,6 @@
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# Keypad Scanning
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-There's a dozen ways to connect a keyboard to a microcontroller, and this paper attempts to enumerate many of them.
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+There's a dozen ways to connect a keyboard to a microcontroller, and this paper attempts to enumerate many of them. [test link](#one-per-pin)
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There are similar articles on the internet [[see below](#ext_ref)],
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but this paper introduces some new techniques: [row-grounded](#3x4-plus-ground-[new-design]),
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[row-grounded-with-diodes](#3x4diodes),
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@@ -22,8 +22,8 @@ Sometimes, this is appropriate if the keypad is small or in an awkward location,
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In this document, *n* refers to the number of keys that are in the keyboard. The letter *k* refers to a specific key
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that is being pressed during an explanation.
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-<a name="one_per_pin" />
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-## One per Pin
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+
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+## <a name="one_per_pin" /> One per Pin
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The simplest way to connect keys to a microcontroller is one key to one pin.
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Connect the other side of the key to ground.
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