actually human muscle movement signals i.e extention,flexion,static are obtained at the adc input and sent to the pc via serial port.each signal has to be displayed separately.
What exactly is your question? What processot are you using? Its datasheet will tell you how to use its ADC. Serial comms is serial comms - just follow the multitude of standard examples. Displaying on a PC is a matter of writing or finding a suitable PC application - that's off-topic for this forum.