From 91dba4ebf657c10a0759482d1ca7da53e2618d62 Mon Sep 17 00:00:00 2001 From: Mohammad Iftekher Ebne Jalal Date: Thu, 3 Jun 2021 14:44:05 +0600 Subject: [PATCH] Update README.md --- 1-getting-started/lessons/4-connect-internet/README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/1-getting-started/lessons/4-connect-internet/README.md b/1-getting-started/lessons/4-connect-internet/README.md index 44922883..0fba9584 100644 --- a/1-getting-started/lessons/4-connect-internet/README.md +++ b/1-getting-started/lessons/4-connect-internet/README.md @@ -27,7 +27,7 @@ In this lesson we'll cover: ## Communication protocols -There are a number of popular communication protocols used by IoT devices to communicate with the Internet. The most popular are based around publish/subscribe messaging via some kind of broker. The IoT devices connect to the broker and publish telemetry and subscribe to commands, the cloud services also connect to the broker and subscribe to all the telemetry messages and publishe commands either to specific devices, or to groups of devices. +There are a number of popular communication protocols used by IoT devices to communicate with the Internet. The most popular are based around publish/subscribe messaging via some kind of broker. The IoT devices connect to the broker and publish telemetry and subscribe to commands, the cloud services also connect to the broker and subscribe to all the telemetry messages and publish commands either to specific devices, or to groups of devices. ![IoT devices connect to a broker and publish telemetry and subscribe to commands. Cloud services connect to the broker and subscribe to all telemetry and send commands to specific devices.](../../../images/pub-sub.png)