Difference between two Mnemonics

Question

Dear All

 

 I'm very new to C# codes. I don't have background in programming and I have a project that I need to build basic logic to be run on a real time data. Here is what I'm trying to do.

 

1. Calculate a difference between current value and previous value and output the result

2. Calculate the Sum for the difference over 15 sec and output the result. 

 

I'd really appreciate it if you could help me with this.

 

Thank you