Update Lecture1.md

Author: benpaddlejones

tutorials/Lecture1.md

@@ -1,24 +1,12 @@
 # Lecture 1
 
 ## Lecture 1 Concepts
-- Pin & PWM Parent Classes
 - Unit Testing
 - Parent/Child Class
+- Generalisation
+- Pin & PWM Parent Classes
 - Instantiation
 - Inheritance
-- Generalisation
-
-## Pin Library
-
-[Machine.Pin Library Documentation](https://docs.micropython.org/en/latest/library/machine.Pin.html)
-
-The Pin library in MicroPython for the Pi Pico allows you to control the General Purpose Input/Output (GPIO) pins of the Pico. It allows you to configure pins as digital (binary) inputs or outputs.
-
-## PWM Library
-
-[Machine.Pin Library Documentation](https://docs.micropython.org/en/latest/library/machine.PWM.html)
-
-The PWM Library provides an interface for controlling PWM signals on a specified GPIO pin. It allows you to configure any GPIO pin as a PWM and set the duty cycle and frequency.
 
 ## Unit Testing
 
@@ -39,6 +27,8 @@ classDiagram
         +value()
         +high()
         +low()
+        +high()
+        +low()
         +toggle()
     }
 
@@ -65,10 +55,9 @@ classDiagram
         +__init__(pin: int, flashing: bool, debug: bool)
         +on()
         +off()
+        +high()
+        +Low
         +toggle()
-        +flash(duration: int)
-        +on_for(duration: int)
-        +led_light_state: int
     }
     Pin <|-- Led_Light : Inheritance
 
@@ -86,6 +75,22 @@ 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)
+
+The Pin library in MicroPython for the Pi Pico allows you to control the General Purpose Input/Output (GPIO) pins of the Pico. It allows you to configure pins as digital (binary) inputs or outputs.
+
+## PWM Library
+
+[Machine.Pin Library Documentation](https://docs.micropython.org/en/latest/library/machine.PWM.html)
+
+The PWM Library provides an interface for controlling PWM signals on a specified GPIO pin. It allows you to configure any GPIO pin as a PWM and set the duty cycle and frequency.
+
 ## Instantiation
 
 A class is like a blueprint for an object—it defines what attributes and methods the object will have, but by itself, it isn’t an actual object. Instantiation is when you use the class to create an actual, usable object in memory.
@@ -137,7 +142,3 @@ while True:
     red_light.toggle()
     sleep(4)
 ```
-
-## 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.