How do you write a difference equation?
A first-order difference equation only contains the first difference of a variable between two consecutive periods, like y(t + 1) − y(t). A second-order difference equation also contains the second difference in a variable between every two successive time periods, like y(t + 2) − y(t).
What is the difference of block diagram?
A block diagram is a drawing illustration of a system whose major parts or components are represented by blocks. These blocks are joined by lines to display the relationship between subsequent blocks. While flow diagram is used to show the flow of information within a system visually.