From 47000f951158fe917aa5c918c3c48d46f28ec5f8 Mon Sep 17 00:00:00 2001
From: Neil Gershenfeld <gersh@cba.mit.edu>
Date: Sun, 15 Nov 2020 09:47:41 -0500
Subject: [PATCH] wip

---
 index.html | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.html b/index.html
index 527c8fd..6fa84f4 100644
--- a/index.html
+++ b/index.html
@@ -27,7 +27,7 @@ This page collects ring oscillator timing tests for embedded systems (the prior
 
 <p>
 
-The GPIO test measures how quickly pins can communicate with a processor core. Two pins are connected; a bit is output on one, read on the other, inverted in software, and the loop repeated, with the frequency of the resulting oscillation reported. Twice this frequency is the rate of reading, modifying, and writing to a pin (plus the loop overhead).
+The GPIO test measures how quickly pins can communicate with a processor core; this is relevant for implementing real-time algorithms that are not supported by processor peripherals. In this, two pins are connected; a bit is output on one, read on the other, inverted in software, and the loop repeated, with the frequency of the resulting oscillation reported. Twice this frequency is the rate of reading, modifying, and writing to pins (plus the loop overhead).
 
 <center>
 <table border="1" style="text-align:center">
-- 
GitLab