It is used to see the output wave form of Circuits.Wave forms such as Sine,Triangular,Square Wave.It is used to generate different waveforms with different frequency.It is used to measure the power of your circuit.It is used to measure VOLTAGE and CURRENT of AC and DC Signals.The toolbox you see on your right hand side is a Instruments toolbox.It contains equipments such as Now you have finished your installation.Then open your Multisim Software,Now you have got 2 years trial period of use.Click on Evaluate.This will open your multisim simulation software.Go to start->All Programs->National Instruments->Circuit Design Suit->Multisim.Then click Restart to complete your installation.After the installation is complete click next>.After that the installation will start.Click on I accept Lisence agreements and then click next>.Set your Destination Directory for installation and click on next>.click on install this product for evaluation then click next>.Click on setup in your downloaded NI software.evaluation.Change the system date from 2016 to 2018.NI Multisim 12.0 gives 30 days trial use of software.You can extend this period to 2 years if you follow the installation method given below.I had also given the installation steps in picture given above.

Multisim 12 code