Presently, software has many applications using Python tkinter. We want to modify it.
1) draw tangent to a curve (Fig1)and measure area under the curve upto tangent
2) Add a new application : Communicate with aurdino to measure and plot current vs time. (old application is attached, Fig 2).
3) In old application (Fig 2), voltage vs current graph is displayed where voltage is in integer ( like 2 V, 5 V, 8 V etc), it should display one digit after decimal ( like 2.2 V, 5.7 V, 8.3 V etc) in Voltage.
4) Reorientation of present application display (Fig2)