Merge #202

202: Link to the Wikipedia page on Asynchronous Serial Communication r=therealprof a=rectang

As someone new to embedded programming, I found the term "serial communication protocol" confusing because in the general sense there are many "serial communication protocols" which have nothing to do with the specific logical protocol referenced in the book (e.g. MIDI).

Providing a link to the "Aynchronous Serial Communication" page on Wikipedia will hopefully spare others from having to search the web to find out just which "serial communication protocol" is being referenced.



Co-authored-by: Marvin Humphrey <[email protected]>

Author: bors[bot]

src/10-serial-communication/README.md

@@ -14,7 +14,7 @@ Nah, don't worry. This connector, the DE-9, went out of fashion on PCs quite som
 replaced by the Universal Serial Bus (USB). We won't be dealing with the DE-9 connector itself but
 with the communication protocol that this cable is/was usually used for.
 
-So what's this *serial communication*? It's an *asynchronous* communication protocol where two
+So what's this [*serial communication*][ASC]? It's an *asynchronous* communication protocol where two
 devices exchange data *serially*, as in one bit at a time, using two data lines (plus a common
 ground). The protocol is asynchronous in the sense that neither of the shared lines carries a clock
 signal. Instead both parties must agree on how fast data will be sent along the wire *before* the
@@ -49,3 +49,5 @@ offers. Pick a route:
 
 - [*nix](nix-tooling.md)
 - [Windows](windows-tooling.md)
+
+[ASC]: https://en.wikipedia.org/wiki/Asynchronous_serial_communication