small refactor + readme update

README.md

@@ -1,13 +1,16 @@
 # Electronics scripts
 
-This repository aim to be a collection of useful scripts when working on small electronic projects.
+This repository aim to be a collection of useful scripts when working on small electronic projects.  
+
+
+for input values, n, u or µ, m, k, M and G suffixes are accepted, respectively for nano, micro, milli, kilo, mega and giga.  
+The inputs are asked through CLI, when multiple values are possible they can be separated with commas or spaces.
 
 ---
 
 ## voltage\_divider.py
 #### input:
-(will ask the input through CLI if ran directly)
-+ a list of resistors values (floats) separated by commas or spaces, accept K and M suffixes for kilo and mega ohms values.  
++ a list of resistors values  
 *example: 10 50 47 100 5K 1M*
 + a desired ratio \(0 ≤ ratio ≤ 1\) for the voltage divider  
 *example: 0.4096*
@@ -15,3 +18,12 @@ This repository aim to be a collection of useful scripts when working on small e
 The 5 best resistor pairs (closest to the desired ratio).
 
 ---
+
+## parallel\_resistors.py
+#### input:
++ a list of resistors values
+#### output
++ the total resistance with the resistors connected in parallel
+
+---
+