Week 4 Programming Looping and functions, make a buzzer sound with PWM

Fix up Code

We need to fix up the mistake in several programs where the pin reset is wrong to do this
  •  save basics/variables.py as basics/variables_your_name.py
    This is because we are going to update the code and we may lose the work you did otherwise.
  • In Thonny open any file and go to tools->open system shell
  • In the raspberry directory (you may need to change directory) type git pull

Programming

  • Conditionals (basics\conditionals.py)
  • Looping For, While (basics\looping.py)
  • Functions (basics\functions2025)
  • Scope of blocks (counter inside function) use of the global keyword.

Pico

  • Make a buzzer sound using pwm (pico_code\buzzer.py)

Homework

  • Using a while loop add Fibonacci numbers and output their values until the Fibonacci number is greater that 100,000
  • Extension homework.  Find the largest prime number you can in 1 hr. (Ok to use your watch no need to look up "time" functions)
  • Out of interest... 
    RSA prime numbers used are between 1024 bits long and 2048 bits long which means they are between.... 2^1024 -1  and 2^2048 -1 
    which for a 1024 bit number the largest number would be (approx)
    179 800,000,(300 zeros) or 1.798 E 308

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