diff --git a/src/app/components/results/ListOfNumbersExpressionView.jsx b/src/app/components/results/ListOfNumbersExpressionView.jsx
index 0e9fdb6..f2932c0 100644
--- a/src/app/components/results/ListOfNumbersExpressionView.jsx
+++ b/src/app/components/results/ListOfNumbersExpressionView.jsx
@@ -12,15 +12,43 @@ export default class ListOfNumersExpressionView extends React.Component {
 }
 
 class OperandView extends React.Component {
+    componentWillMount() {
+        this.setState(this.props.operand);
+    }
     render() {
-        const op = this.props.operand;
-        console.log(this.props);
-        // const bitsSize = this.propsю;
-         // .padLeft(m.bitsSize, '0')
-        return  <tr data-kind={op.kind}>
+        const op = this.state;
+        const binaryString = formatter.padLeft(op.bin, this.props.maxBitsLegnth, '0');
+
+        return <tr data-kind={op.kind}>
             <td className="label">{op.input}</td>
-            <td className="bin">{formatter.padLeft(op.bin, this.props.maxBitsLegnth, '0')}</td>
+            <td className="bin"><ClickableBinary binaryString={binaryString} onFlipBit={i => this.flipBit(i)} /></td>
             <td className="other">{op.other}</td>
         </tr>
     };
+
+    flipBit(index) {    
+        var op = this.props.operand;
+        const binaryString = formatter.padLeft(op.bin, this.props.maxBitsLegnth, '0');
+        var arr = binaryString.split('');
+        arr[index] = arr[index] == '0' ? '1' : '0';
+        op.update(arr.join());
+        this.setState(op);
+    }
+}
+
+class ClickableBinary extends React.Component {
+    render() {
+        const str = this.props.binaryString;
+        const chars = str.split('');
+        const classNames = { '0': 'zero flipable', '1' : 'one flipable' };
+        const children = chars.map((c, i) => <span className={classNames[c]} key={i} onClick={e => this.onBitClick(i, e)}>{c}</span>);
+        
+        return <span>{children}</span>
+    }
+
+    onBitClick(index, e) {
+        if(this.props.onFlipBit) {
+            this.props.onFlipBit(index);
+        }
+    }
 }
\ No newline at end of file
diff --git a/src/app/expression.js b/src/app/expression.js
index 52b5d4a..64843f3 100644
--- a/src/app/expression.js
+++ b/src/app/expression.js
@@ -131,19 +131,7 @@ export class Operand {
             return Math.floor(Math.log(this.value) / Math.log(2)) + 1;
         };
 
-        toKindString(value, kind) {
-            switch(kind) {
-                case 'hex':
-                    var hexVal = Math.abs(value).toString(16);
-                    return value >= 0 ? '0x' + hexVal : '-0x' + hexVal;
-                case 'bin':
-                    return (value>>>0).toString(2);
-                case 'dec':
-                    return value.toString(10);
-                default:
-                    throw new Error("Unexpected kind: " + kind)
-            }
-        };
+        
 
      getOtherKind(kind) {
         switch(kind) {
@@ -156,7 +144,15 @@ export class Operand {
     toString() {
         return this.input;
     }
-    
+
+    update(binary) {
+        this.value = parseInt(2);
+        this.bin = binary;
+        this.dec = Operand.toKindString(this.value, 'dec');
+        this.hex = Operand.toKindString(this.value, 'hex');
+
+    }
+        
     static getBitLength(num) {
         return Math.floor(Math.log(num) / Math.log(2)) + 1
     }    
@@ -178,6 +174,20 @@ export class Operand {
         return new Operand(str);
     };
 
+    static toKindString(value, kind) {
+            switch(kind) {
+                case 'hex':
+                    var hexVal = Math.abs(value).toString(16);
+                    return value >= 0 ? '0x' + hexVal : '-0x' + hexVal;
+                case 'bin':
+                    return (value>>>0).toString(2);
+                case 'dec':
+                    return value.toString(10);
+                default:
+                    throw new Error("Unexpected kind: " + kind)
+            }
+        };
+
     static toHexString (hex) {
             return hex.indexOf('-') == 0 ? '-0x' + hex.substr(1) : '0x' + hex;
      };