What Is A Flow Chart?
Revision Resource 1
What is a flow chart?
Why do we use flow charts?
Flow Chart Symbols
What are flow chart symbols and why do we use them
What is a sub routine?
What is a sub routine and why do we use them?
Programs our made up of subroutines, these are little bits of code that are not always on, for example if you wanted to change the fount of a text in word then clicking on the fount siltation and changing it is an example of a subroutine. They basically ensure the smooth running of a computer. The biggest thing to remember though is that subroutines are not programs they are way to small to be, they are instead what makes up codes and programs.