private void Clear_Click(object sender, RoutedEventArgs e)
        {
            if (!_loaded)
            {
                return;
            }
            SimpleMinterm.Text = "";
            IMintermTable mintermatble = null;

            switch (InputMode.SelectedIndex)
            {
            case 0:
                foreach (var i in McuTools.Interfaces.WPF.WpfHelpers.FindChildren <RadioButton>(VarButtons))
                {
                    if (i.IsChecked == true)
                    {
                        RadioButton_Checked(i, null);
                        break;
                    }
                }
                break;

            case 1:
                mintermatble = Minterm2x;
                break;

            case 2:
                mintermatble = Minterm3x;
                break;

            case 3:
                mintermatble = Minterm4x;
                break;

            case 4:
                mintermatble = Minterm5x;
                break;
            }
            if (mintermatble != null)
            {
                mintermatble.ClearInput();
                if (LsbBit.IsChecked == true || reversed)
                {
                    mintermatble.SwapVarnames();
                    reversed = !reversed;
                }
            }
        }
        private void Button_Minimize_Click(object sender, RoutedEventArgs e)
        {
            if (!_loaded)
            {
                return;
            }
            //string simple = null;
            IMintermTable mintermatble = null;

            switch (InputMode.SelectedIndex)
            {
            case 0:
                SimpleMinterm.Text = QuineMcclusky.GetSimplified(_items, _variables, (bool)HazardSafe.IsChecked, (bool)LsbBit.IsChecked, false);
                SimpleMaxterm.Text = QuineMcclusky.GetSimplified(_items, _variables, (bool)HazardSafe.IsChecked, (bool)LsbBit.IsChecked, true);
                break;

            case 1:
                mintermatble = Minterm2x;
                _variables   = 2;
                break;

            case 2:
                mintermatble = Minterm3x;
                _variables   = 3;
                break;

            case 3:
                mintermatble = Minterm4x;
                _variables   = 4;
                break;

            case 4:
                mintermatble = Minterm5x;
                _variables   = 5;
                break;

            case 5:
                InputByNumbers();
                break;
            }
            if (mintermatble != null)
            {
                SimpleMinterm.Text = QuineMcclusky.GetSimplified(mintermatble.Selected, _variables, (bool)HazardSafe.IsChecked, (bool)LsbBit.IsChecked, false);
                SimpleMaxterm.Text = QuineMcclusky.GetSimplified(mintermatble.Selected, _variables, (bool)HazardSafe.IsChecked, (bool)LsbBit.IsChecked, true);
            }
        }