The simple electronic projects are really interesting. Only thing we required is a proper plan to complete these projects. It develops our project planing knowledge and confidence. For this we required special engineering software. Here i have used two type of designing software.

Proteus Design Suit 8

Proteus VSM Simulation was the world's first schematic based micro-controller simulation tool and quickly became a de-facto standard for teaching embedded systems within education. Today, we support more processor families along with more embedded peripherals and more technologies than any other tool on the market and we remain world leaders in the field.
 

The Proteus PCB Design and Layout tools have successfully served both commercial and educational needs for over twenty-five years. Students benefit from exposure to professional grade tools with an intuitive user interface and a quick learning curve. 

But because of the easiness to find the libraries of new components I also used EAGLE software.

EAGLE Version 7

EAGLE PCB Design Software is the tool of choice for thousands of engineers worldwide. It is a complete Electronics Design System, which helps you make your design perform better, quicker and cheaper.

With 3 modules and a common interface, EAGLE offers a variety of product combinations and allows every user to choose the configuration that meets their individual requirements.
 
As all my projects are based on Arduino, I used Arduino IDE When it comes to the programming.


Arduino IDE 

The open-source Arduino Software (IDE) makes it easy to write code and upload it to the board. It runs on Windows, Mac OS X, and Linux. The environment is written in Java and based on Processing and other open-source software.
This software can be used with any Arduino board.Refer to the Getting Started page for Installation instructions.