Update Lecture1.md

Author: benpaddlejones

tutorials/Lecture1.md

@@ -2,8 +2,8 @@
 
 ## Lecture 1 Concepts
 - Unit Testing
-- Parent/Child Class
 - Generalisation
+- Parent/Child Class
 - Pin & PWM Parent Classes
 - Instantiation
 - Inheritance
@@ -14,6 +14,10 @@ Unit testing is the process of writing and running small, isolated tests that ch
 
 Unit testing is especially valuable in embedded systems, such as the Pi Pico, where debugging can be challenging due to limited resources and hardware complexity. By ensuring each component works independently, you can build more complex mechatronic solutions.
 
+## Generalisation
+
+On the Pi Pico, the Pin and PWM libraries are designed to be generalised to provide flexible and reusable interfaces for interacting with the microcontroller’s hardware. The simple `on()`, `off()` or `high()`, `low()` methods are not specific to any hardware but are generalised to the nature of a digital GPIO Pin. As a generalised class is inherited and the classes are extended, they become more specific (less generalised) and functional to specific hardware for which they are designed.
+
 ## Parent/Child Classes
 
 A parent/child (or super/sub) class relationship is a key concept in object-oriented programming (OOP), also known as inheritance. The parent class defines common attributes and methods.
@@ -75,10 +79,6 @@ classDiagram
 
 ```
 
-## Generalisation
-
-On the Pi Pico, the Pin and PWM libraries are designed to be generalised to provide flexible and reusable interfaces for interacting with the microcontroller’s hardware. The simple `on()`, `off()` or `high()`, `low()` methods are not specific to any hardware but are generalised to the nature of a digital GPIO Pin. As a generalised class is inherited and the classes are extended, they become more specific (less generalised) and functional to specific hardware for which they are designed.
-
 ## Pin Library
 
 [Machine.Pin Library Documentation](https://docs.micropython.org/en/latest/library/machine.Pin.html)