public void Attach(CommInterface com)
 {
     CommObj = com;
 }

 public void Show(CommInterface com)
 {
     frmI2CIO6R2G5V1 frm = new frmI2CIO6R2G5V1();
     frm.Attach(com);
     frm.ShowDialog();
 }

 public void Show(CommInterface com)
 {
     frmI2CS frm = new frmI2CS();
     frm.Attach(com);
     frm.ShowDialog();
 }

 public void Show(CommInterface com)
 {
     I2CADC frm = new I2CADC();
     frm.Attach(com);
     frm.ShowDialog();
 }