diff --git a/js/lab-2.js b/js/lab-2.js
new file mode 100644
index 0000000..9457267
--- /dev/null
+++ b/js/lab-2.js
@@ -0,0 +1,540 @@
+let maxNumOfValues = 26;
+let currNumOfValues = 2;
+
+function AddValue() {
+
+    if (currNumOfValues < 26) {
+
+        let charNum = 65 + currNumOfValues;
+        currNumOfValues++;
+    
+        let delBtn = document.querySelectorAll('#delBtn');
+        if (delBtn[delBtn.length - 1]) {
+            delBtn[delBtn.length - 1].style="display: none;";
+        }
+
+        node = document.getElementById('values');
+        node.insertAdjacentHTML('beforeend', `  <div class="field" id="valueField${charNum - 65}">
+                                                    <div style="display: flex; align-items: center;">
+                                                        <button class="delete is-small mr-1" type="button" onclick="DeleteValue(${charNum - 65})" id="delBtn"></button>
+                                                        <label class="label">Value &#${charNum}</label>
+                                                    </div>
+                                                    <div class="control">
+                                                        <input class="input" type="text" placeholder="e.g. 1 or 0" id="value${charNum - 65}">
+                                                    </div>
+                                                </div>`);
+    } else {
+        console.log('You have reached a limint of available values');
+    }
+}
+
+function DeleteValue(valNum) {
+    
+    let valueField = document.querySelector(`#valueField${valNum}`);
+    valueField.remove();
+    currNumOfValues--;
+
+    let delBtn = document.querySelectorAll('#delBtn');
+    if (delBtn[delBtn.length - 1]) {
+        delBtn[delBtn.length - 1].style="display: inline-block;";
+    }
+}
+
+
+let VALUES = new Set();
+let userValues = new Array();
+
+function FetchValues() {
+
+    userValues = new Array();
+
+    for (let i = 0; i < currNumOfValues; i++) {
+        
+        let inputField = document.getElementById(`value${i}`);
+        let currCharStr = String.fromCharCode(65 + i);
+        
+        if (inputField.value === '1' || inputField.value === 'true' || inputField.value === 'True'|| inputField.value === 'TRUE' || inputField.value === 't' || inputField.value === 'T') {
+            VALUES.add(currCharStr);
+            userValues.push([currCharStr, true]);
+        } else if (inputField.value === '0' || inputField.value === 'false' || inputField.value === 'False' || inputField.value === 'FALSE' || inputField.value === 'f' || inputField.value === 'F') {
+            VALUES.add(currCharStr);
+            userValues.push([currCharStr, false]);
+        }
+    }
+
+    for (const iterator in VALUES) {
+        console.log(iterator, VALUES[iterator]);
+    }
+}
+
+
+function Evaluate() {
+    
+    FetchValues();
+
+    let formulaField = document.getElementById('formula');
+
+    let formulaChraArray = formulaField.value.split('');
+    let formulaRPNArray = ConvertCharArrayToRPNArray(formulaChraArray);
+    let formulaValuesRPNArray = ConvertLettersToValues(formulaRPNArray);
+
+    let result = SolveRPNFormula(formulaValuesRPNArray);
+    let readableResult = convertToReadableResult(result[0]);
+
+    let resultField = document.getElementById('result');
+    resultField.value = readableResult;
+
+
+    let stepsActionsArray = StepByStepRPNFormula(formulaRPNArray);
+    let stepsResultsArray = result[1];
+    
+    for (let i = 0; i < stepsActionsArray.length; i++) {
+        const action = stepsActionsArray[i];
+        const result = stepsResultsArray[i];
+        
+        console.log(action + ' = ' + result);
+    }
+}
+
+
+function Negation(value) {
+
+    if (value != undefined) { return !value; }
+}
+
+function Conjunction(firstValue, secondValue) {
+
+    if (firstValue === true && secondValue === true) {
+        return true;
+    } else if (firstValue === false && secondValue === true || firstValue === true && secondValue === false || firstValue === false && secondValue === false) {
+        return false;
+    }
+}
+
+function Disjunction(firstValue, secondValue) {
+
+    if (firstValue === true || secondValue === true) {
+        return true;
+    } else if (firstValue === false && secondValue === false) {
+        return false;
+    }
+}
+
+function Equivalence(firstValue, secondValue) {
+
+    if (firstValue === secondValue) {
+        return true;
+    } else if (firstValue !== secondValue) {
+        return false;
+    }
+}
+
+
+
+
+
+
+function ConvertCharArrayToRPNArray(chars) {
+
+    let _values_stack = new Array();
+    let _actions_stack = new Array();
+
+    for (let i = 0; i < chars.length; i++) {
+        const element = chars[i];
+        
+        if (VALUES.has(element)) {
+
+            _values_stack.push(element);
+        } else if (OPERATORS.has(element)) {
+
+            while (GetActionPriority(_actions_stack[_actions_stack.length - 1]) >= GetActionPriority(element)) {
+
+                let last = _actions_stack.pop();
+
+                if (last != '(') {
+                    _values_stack.push(last);
+                } else {
+                    break;
+                }
+            }
+
+            if (_actions_stack[0] == undefined || GetActionPriority(_actions_stack[_actions_stack.length - 1]) < GetActionPriority(element)) {
+
+                _actions_stack.push(element);
+            }
+        } else if (BRACKETS.has(element)) {
+
+            if (element == '(') {
+
+                _actions_stack.push(element);
+            }
+
+            if (element == ')') {
+
+                let _last = _actions_stack.pop();
+
+                while (_last != '(') {
+
+                    _values_stack.push(_last);
+                    _last = _actions_stack.pop();
+                }
+            }
+        } else {
+            Error('The programm cant solve given formula. Do you typed everything right? Maybe you forgot to define some value?');
+        }
+    }
+
+    while (_actions_stack[0] != undefined) {
+
+        _values_stack.push(_actions_stack.pop());
+    }
+
+    return _values_stack;
+}
+
+function ConvertLettersToValues(RPNArray) {
+
+    let valuesRNPArray = new Array();
+
+    RPNArray.forEach(element => {
+        
+        if (VALUES.has(element)) {
+            valuesRNPArray.push(GetValueFromIndex(element));
+        } else if (element !== '(' || element !== ')') {
+            valuesRNPArray.push(element);
+        }
+    });
+
+    return valuesRNPArray;
+}
+
+function SolveRPNFormula(valuesRPNArray) {
+
+    let stepByStepResults = new Array();
+
+    let _stack =  new Array();
+
+    for (let i = 0; i < valuesRPNArray.length; i++) {
+        const element = valuesRPNArray[i]; 
+
+        if (OPERATORS.has(element)) {
+
+            if (element == '!') {
+                
+                let _currValue = _stack.pop();
+
+                let _result = Negation(_currValue);
+
+                _stack.push(_result);
+                stepByStepResults.push(convertToReadableResult(_result));
+     
+            } else if (element == '*') {
+                
+                let _secondValue = _stack.pop();
+                let _firstValue = _stack.pop();
+                
+                let _result = Conjunction(_firstValue, _secondValue);
+                
+                _stack.push(_result);
+                stepByStepResults.push(convertToReadableResult(_result));
+                
+            } else if (element == '+') {
+
+                let _secondValue = _stack.pop();
+                let _firstValue = _stack.pop();
+                
+                let _result = Disjunction(_firstValue, _secondValue);
+                
+                _stack.push(_result);
+                stepByStepResults.push(convertToReadableResult(_result));
+                
+            } else if (element == '>') {
+
+                let _secondValue = _stack.pop();
+                let _firstValue = _stack.pop();
+                
+                let _result = Disjunction(Negation(_firstValue), _secondValue);
+                
+                _stack.push(_result);
+                stepByStepResults.push(convertToReadableResult(_result));
+                
+            } else if (element == '=') {
+
+                let _secondValue = _stack.pop();
+                let _firstValue = _stack.pop();
+                
+                let _result = Equivalence(_firstValue, _secondValue);
+                
+                _stack.push(_result);
+                stepByStepResults.push(convertToReadableResult(_result));
+                
+            }
+        } else {
+
+            _stack.push(element);
+        }
+    }
+    
+    return [_stack[0], stepByStepResults];
+}
+
+function StepByStepRPNFormula(RPNArray) {
+
+    let stepsArray = new Array();
+
+    let _stack =  new Array();
+
+    for (let i = 0; i < RPNArray.length; i++) {
+        const element = RPNArray[i]; 
+
+        if (OPERATORS.has(element)) {
+
+            if (element == '!') {
+                
+                let _currValue = _stack.pop();
+
+                let _result;
+
+                if (_currValue.length <= 2) {
+                    _result = '!'.concat(_currValue);
+                } else {
+                    _result = '!'.concat('(').concat(_currValue).concat(')');
+                }
+
+                _stack.push(_result);
+                stepsArray.push([_result]);
+     
+            } else if (element == '*') {
+                
+                let _secondValue = _stack.pop();
+                let _firstValue = _stack.pop();
+                
+                let _result;
+
+                if (_firstValue.length <= 2 && _secondValue.length <= 2) {
+                    _result = _firstValue.concat('*').concat(_secondValue);
+                } else if (_firstValue.length <= 2 && _secondValue.length > 2) {
+                    if (Boolean(_secondValue.split('').filter(x => x === '!').length)) {
+                        _result = _firstValue.concat('*').concat(_secondValue);
+                    } else {
+                        _result = _firstValue.concat('*').concat('(').concat(_secondValue).concat(')');
+                    }
+                } else if (_firstValue.length > 2 && _secondValue.length <= 2) {
+                    if (Boolean(_firstValue.split('').filter(x => x === '!').length)) {
+                        _result = _firstValue.concat('*').concat(_secondValue);
+                    } else {
+                        _result = '('.concat(_firstValue).concat(')').concat('*').concat(_secondValue);
+                    }
+                } else if (_firstValue.length > 2 && _secondValue.length > 2) {
+                    if (Boolean(_firstValue.split('').filter(x => x === '!').length) && Boolean(_secondValue.split('').filter(x => x === '!').length)) {
+                        _result = _firstValue.concat('*').concat(_secondValue);
+                    } if (Boolean(_firstValue.split('').filter(x => x === '!').length) && !Boolean(_secondValue.split('').filter(x => x === '!').length)) {
+                        _result = _firstValue.concat('*').concat('(').concat(_secondValue).concat(')');
+                    } else if (!Boolean(_firstValue.split('').filter(x => x === '!').length) && Boolean(_secondValue.split('').filter(x => x === '!').length)) {
+                        _result = '('.concat(_firstValue).concat(')').concat('*').concat(_secondValue);;
+                    } else {
+                        _result = '('.concat(_firstValue).concat(')').concat('*').concat('(').concat(_secondValue).concat(')');
+                    }
+                }
+                
+                _stack.push(_result);
+                stepsArray.push([_result]);
+                
+            } else if (element == '+') {
+
+                let _secondValue = _stack.pop();
+                let _firstValue = _stack.pop();
+                
+                let _result = _firstValue.concat('+').concat(_secondValue);
+                
+                _stack.push(_result);
+                stepsArray.push([_result]);
+                
+            } else if (element == '>') {
+
+                let _secondValue = _stack.pop();
+                let _firstValue = _stack.pop();
+                
+                let _result = _firstValue.concat('>').concat(_secondValue);
+                
+                _stack.push(_result);
+                stepsArray.push([_result]);
+                
+            } else if (element == '=') {
+
+                let _secondValue = _stack.pop();
+                let _firstValue = _stack.pop();
+                
+                let _result = _firstValue.concat('=').concat(_secondValue);
+                
+                _stack.push(_result);
+                stepsArray.push([_result]);
+            }
+        } else {
+
+            _stack.push(element);
+        }
+    }
+    
+    return stepsArray;
+    // return _stack[0];
+}
+
+
+
+
+
+function InputFormulaFotTruthTable() {
+
+    ClearTruthTableData();
+
+    console.log('\n',
+        'Write a formula you want to build a truth table for. Examples: (!a>b)+c*d=e',
+        '\n'
+    );
+
+    let _formulaString = prompt('>>> ');
+
+
+    if (_formulaString.search('[!,*,+,>,=]') == -1) {
+        Error('The programm cant solve given formula. Do you typed everything right?');
+    }
+
+
+    if (_formulaString.match(/[a-z]/g) != null) {
+        
+        _formulaString.match(/[a-z]/g).forEach (element => {
+            TTVALUESNAMES.add(element);
+        })
+    } else {
+        Error('The programm cant solve given formula. Do you typed everything right?');
+    }
+
+    TTVALUESNAMES.forEach(element => {
+        TTVALUESCONTENTS.push([element]);
+    })
+
+
+    let _numColumns =  TTVALUESNAMES.size;
+
+    let _numRows = Math.pow(2, _numColumns);
+
+    
+
+    let _rowsContent = new Array();
+
+    for (let r = 0; r < _numRows; r++) {
+        
+        _rowsContent.push(new Array());
+
+        for (let c = 0; c < _numColumns; c++) {
+            
+            _rowsContent[r].push(false);
+        }
+    }
+
+
+    for (let c = 0; c < _numColumns; c++) {
+        
+        let _period = Math.pow(2, _numColumns) / Math.pow(2, c+1);
+
+        let _zeros = true;
+
+        for (let r = 0; r < _numRows; r++) {
+
+            if (_zeros) {
+                _rowsContent[r][c] = false;
+                TTVALUESCONTENTS[c].push(false);
+            }
+
+            if (!_zeros) {
+                _rowsContent[r][c] = true;
+                TTVALUESCONTENTS[c].push(true);
+            }
+            
+            if ((r + 1) % _period == 0) {
+                _zeros = !_zeros;
+            }
+        }
+    }
+
+    // console.log(_rowsContent);
+    // console.log(TTVALUESCONTENTS);
+
+
+
+    let _formulaCharArray = ConvertFormulaToCharArray(_formulaString);
+
+    let _result = new Array();
+
+    for (let i = 0; i < _numRows; i++) {
+        
+        let _formula_RPN_Array = ConvertCharArrayToRPNArray(_formulaCharArray, i + 1);
+        _result.push(SolveRPNFormula(_formula_RPN_Array));
+    }
+    // console.log(_result);
+    _result.forEach(element => {
+        
+        if (element == undefined) {
+            Error('The programm cant solve given formula. Do you typed everything right?');
+        }
+    });
+
+    ttformula = _formulaString;
+    numRows = _numRows;
+    rowsContent = _rowsContent;
+    truthTable = _result;
+
+
+    console.log('');
+    for (let r = 0; r < _numRows; r++) {
+        
+        console.log(` ${_rowsContent[r].join(', ')} : ${_result[r]}`);
+    }
+    console.log('');
+
+    ClearTruthTableData();
+
+    ReturnToMenu();
+}
+
+
+
+
+const OPERATORS = new Set(['!', '*', '+', '>', '=']);
+const BRACKETS = new Set(['(', ')']);
+
+function GetActionPriority(action) {
+
+    if (action == '!') {
+        return 5;
+    } else if (action == '*') {
+        return 4;
+    } else if (action == '+' || action == '>' || action == '=') {
+        return 3;
+    } else if (action == '(') {
+        return 2;
+    } else {
+        return 0;
+    }
+}
+
+function GetValueFromIndex(valueIndex) {
+
+    for (let i = 0; i < userValues.length; i++) {
+        const element = userValues[i];
+        
+        if (element[0] == valueIndex) {
+            return element[1];
+        } 
+    }
+}
+
+function convertToReadableResult(unconverted) {
+
+    return unconverted === true ? '1' : '0';
+}
+
+function Error(errMsg) {
+    console.log(` [ERROR] ${errMsg}`);
+}
\ No newline at end of file
diff --git a/pages/lab-1.html b/pages/lab-1.html
index 8e8010d..5003cfc 100644
--- a/pages/lab-1.html
+++ b/pages/lab-1.html
@@ -16,7 +16,7 @@
 
     <nav class="navbar is-white">
         <div class="navbar-brand">
-            <a href="../index.html" class="navbar-item">
+            <a href="../insdex.html" class="navbar-item">
                 <!-- <img class="mr-2 py-1" src="assets/cuqmbr.png" alt="Cucumber emoji image"> -->
                 CDM Utils
                 <!-- <img class="ml-2 py-1" src="assets/Shchoholev-logo.png" alt="Cucumber emoji image"> -->
diff --git a/pages/lab-2.html b/pages/lab-2.html
index bbaeab6..695fc32 100644
--- a/pages/lab-2.html
+++ b/pages/lab-2.html
@@ -4,11 +4,118 @@
     <meta charset="UTF-8">
     <meta http-equiv="X-UA-Compatible" content="IE=edge">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>Document</title>
+
+    
+    <title>Lab-1</title>
+
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.3/css/bulma.min.css">
+
+    <script src="../js/lab-2.js"></script>
 </head>
 <body>
+
+    <nav class="navbar is-white">
+        <div class="navbar-brand">
+            <a href="../insdex.html" class="navbar-item">
+                CDM Utils
+            </a>
+
+            <a class="navbar-burger" id="burger">
+                <span></span>
+                <span></span>
+                <span></span>
+            </a>
+        </div>
+
+        <div class="navbar-menu" id="nav-links">
+            <din class="navbar-start">
+                <a href="../index.html" class="navbar-item">
+                    Home
+                </a>
+            </din>
+            
+            <div class="navbar-end">             
+                <div class="navbar-item has-dropdown is-hoverable" id='dropdown'>
+                    <a class="navbar-link">
+                        Introduction. Set Theory
+                    </a>
+
+                    <div class="navbar-dropdown">
+                        <a href="lab-1.html" class="navbar-item">
+                            Set Algebra
+                        </a>
+                    </div>
+                </div>
+            </div>
+        </div>
+    </nav>
+
+    <script src="../js/index.js"></script>
+
     
-   
+
+    <div class="columns gapless my-0 has-background-success is-multiline">
+        <div class="column is-6-desktop is-12-tablet py-0">
+            <section class="hero is-fullheight-with-navbar">
+                <div class="hero-body">
+                    <div class="container">
+                        <p class="title has-text-white">Boolean Algebra</p>
+                        <p class="subtitle has-text-white">Simple implementation of different Boolean Algebra<br> operations, such as: Conjunction, Disjunction, Negation,<br> Implication and Equivalence</p>
+                    </div>
+                </div>
+            </section>
+        </div>
+
+        <div class="column is-6-desktop is-12-tablet">
+            <div class="container">
+                <section class="hero is-fullheight-with-navbar">
+                    <div class="hero-body">
+                        <div class="container">
+                            <form class="box">
+                                <div class="has-text-centered">
+                                    <input type="button" class="button is-info" value="Add new Value" onclick="AddValue();">
+                                </div>
+                
+                                <div class="pb-3" id="values">
+                                    <div class="field">
+                                        <label class="label">Value A</label>
+                                        <div class="control">
+                                            <input class="input" type="text" placeholder="e.g. 1" id="value0">
+                                        </div>
+                                    </div>
+                    
+                                    <div class="field">
+                                        <label class="label">Value B</label>
+                                        <div class="control">
+                                            <input class="input" type="text" placeholder="e.g. 0" id="value1">
+                                        </div>
+                                    </div>
+                                </div>
+                                
+                                <div class="field">
+                                    <label class="label">Formula</label>
+                                    <div class="control">
+                                        <input class="input" type="text" placeholder="e.g. !A>(B+C)*A=C" id="formula">
+                                    </div>
+                                </div>
+                
+                                <div class="has-text-centered">
+                                    <input type="button" class="button is-info" value="Evaluate" onclick="Evaluate();">
+                                </div>
+                
+                                <div class="field">
+                                    <label class="label">Result</label>
+                                    <div class="control">
+                                        <input class="input" type="text" placeholder="" readonly id="result">
+                                    </div>
+                                </div>
+                            </form>
+                        </div>
+                    </div>
+                </section>
+            </div>
+        </div>
+    </div>
 
 </body>
 </html>
\ No newline at end of file