diff --git a/Tests/Cosmos.Common.Tests/.editorconfig b/Tests/Cosmos.Common.Tests/.editorconfig
new file mode 100644
index 000000000..28b282990
--- /dev/null
+++ b/Tests/Cosmos.Common.Tests/.editorconfig
@@ -0,0 +1,9 @@
+; 4-column space indentation
+root=true
+tab_width=4
+indent_size=4
+
+[*.cs]
+tab_width=4
+indent_size=4
+indent_style=space
diff --git a/Tests/Cosmos.Common.Tests/Cosmos.Common.Tests.csproj b/Tests/Cosmos.Common.Tests/Cosmos.Common.Tests.csproj
new file mode 100644
index 000000000..25dbe308b
--- /dev/null
+++ b/Tests/Cosmos.Common.Tests/Cosmos.Common.Tests.csproj
@@ -0,0 +1,92 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Cosmos.Common.Tests</RootNamespace>
+    <AssemblyName>Cosmos.Common.Tests</AssemblyName>
+    <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{3AC096D0-A1C2-E12C-1390-A8335801FDAB};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
+    <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
+    <ReferencePath>$(ProgramFiles)\Common Files\microsoft shared\VSTT\$(VisualStudioVersion)\UITestExtensionPackages</ReferencePath>
+    <IsCodedUITest>False</IsCodedUITest>
+    <TestProjectType>UnitTest</TestProjectType>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+  </ItemGroup>
+  <Choose>
+    <When Condition="('$(VisualStudioVersion)' == '10.0' or '$(VisualStudioVersion)' == '') and '$(TargetFrameworkVersion)' == 'v3.5'">
+      <ItemGroup>
+        <Reference Include="Microsoft.VisualStudio.QualityTools.UnitTestFramework, Version=10.1.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" />
+      </ItemGroup>
+    </When>
+    <Otherwise>
+      <ItemGroup>
+        <Reference Include="Microsoft.VisualStudio.QualityTools.UnitTestFramework" />
+      </ItemGroup>
+    </Otherwise>
+  </Choose>
+  <ItemGroup>
+    <Compile Include="ToHexStringTest.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\source\Cosmos.Common\Cosmos.Common.csproj">
+      <Project>{1fac100c-d732-4ea4-b518-5af4baf64f2e}</Project>
+      <Name>Cosmos.Common</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include=".editorconfig" />
+  </ItemGroup>
+  <Choose>
+    <When Condition="'$(VisualStudioVersion)' == '10.0' And '$(IsCodedUITest)' == 'True'">
+      <ItemGroup>
+        <Reference Include="Microsoft.VisualStudio.QualityTools.CodedUITestFramework, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+          <Private>False</Private>
+        </Reference>
+        <Reference Include="Microsoft.VisualStudio.TestTools.UITest.Common, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+          <Private>False</Private>
+        </Reference>
+        <Reference Include="Microsoft.VisualStudio.TestTools.UITest.Extension, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+          <Private>False</Private>
+        </Reference>
+        <Reference Include="Microsoft.VisualStudio.TestTools.UITesting, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+          <Private>False</Private>
+        </Reference>
+      </ItemGroup>
+    </When>
+  </Choose>
+  <Import Project="$(VSToolsPath)\TeamTest\Microsoft.TestTools.targets" Condition="Exists('$(VSToolsPath)\TeamTest\Microsoft.TestTools.targets')" />
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>
\ No newline at end of file
diff --git a/Tests/Cosmos.Common.Tests/Properties/AssemblyInfo.cs b/Tests/Cosmos.Common.Tests/Properties/AssemblyInfo.cs
new file mode 100644
index 000000000..047992d1e
--- /dev/null
+++ b/Tests/Cosmos.Common.Tests/Properties/AssemblyInfo.cs
@@ -0,0 +1,19 @@
+using System.Reflection;
+using System.Runtime.InteropServices;
+
+[assembly: AssemblyTitle("Cosmos.Common.Tests")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("Cosmos")]
+[assembly: AssemblyProduct("Cosmos.Common.Tests")]
+[assembly: AssemblyCopyright("Copyright © Cosmos 2015")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+[assembly: ComVisible(false)]
+
+// Если данный проект доступен для модели COM, следующий GUID используется в качестве идентификатора библиотеки типов
+[assembly: Guid("0d2dce1c-2a34-4cff-9a33-e9d9b8518d50")]
+
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/Tests/Cosmos.Common.Tests/ToHexStringTest.cs b/Tests/Cosmos.Common.Tests/ToHexStringTest.cs
new file mode 100644
index 000000000..026e5996a
--- /dev/null
+++ b/Tests/Cosmos.Common.Tests/ToHexStringTest.cs
@@ -0,0 +1,47 @@
+namespace Cosmos.Common.Tests
+{
+    using Microsoft.VisualStudio.TestTools.UnitTesting;
+    using Cosmos.Common.Extensions;
+
+    [TestClass]
+    public class ToHexStringTest
+    {
+        /// <summary>
+        /// Test to hex conversion method.
+        /// </summary>
+        [TestMethod]
+        public void TestToHexUnit32()
+        {
+            uint testValue = 32;
+            Assert.AreEqual("00000020", testValue.ToHex());
+            Assert.AreEqual("00000020", testValue.ToHex(8));
+            Assert.AreEqual("0000020", testValue.ToHex(7));
+            Assert.AreEqual("0020", testValue.ToHex(4));
+            Assert.AreEqual("20", testValue.ToHex(2));
+        }
+
+        /// <summary>
+        /// Test to hex conversion method.
+        /// </summary>
+        [TestMethod]
+        public void TestToHexUnit16()
+        {
+            ushort testValue = 34;
+            Assert.AreEqual("0022", testValue.ToHex());
+            Assert.AreEqual("0022", testValue.ToHex(4));
+            Assert.AreEqual("22", testValue.ToHex(2));
+        }
+
+        /// <summary>
+        /// Test to hex conversion method.
+        /// </summary>
+        [TestMethod]
+        public void TestToHexUnit8()
+        {
+            byte testValue = 34;
+            Assert.AreEqual("22", testValue.ToHex());
+            Assert.AreEqual("0022", testValue.ToHex(4));
+            Assert.AreEqual("22", testValue.ToHex(2));
+        }
+    }
+}
diff --git a/source/Cosmos.Common/Cosmos.Common.csproj b/source/Cosmos.Common/Cosmos.Common.csproj
index 326b53c1b..1e4c1926f 100644
--- a/source/Cosmos.Common/Cosmos.Common.csproj
+++ b/source/Cosmos.Common/Cosmos.Common.csproj
@@ -80,6 +80,7 @@
     <Compile Include="Enums.cs" />
     <Compile Include="Extensions\ByteConverter.cs" />
     <Compile Include="Extensions\ToHexString.cs" />
+    <Compile Include="NumberHelper.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="RingAttribute.cs" />
   </ItemGroup>
diff --git a/source/Cosmos.Common/NumberHelper.cs b/source/Cosmos.Common/NumberHelper.cs
new file mode 100644
index 000000000..810221c00
--- /dev/null
+++ b/source/Cosmos.Common/NumberHelper.cs
@@ -0,0 +1,28 @@
+namespace Cosmos.Common
+{
+  using System;
+  using Cosmos.Common.Extensions;
+
+  /// <summary>
+  /// Helper class for working with numbers.
+  /// </summary>
+  public static class NumberHelper
+  {
+    /// <summary>
+    /// Write number to console.
+    /// </summary>
+    /// <param name="aValue">A value to print.</param>
+    /// <param name="aZeroFill">A value indicating whether strarting zeros should be present.</param>
+    public static void WriteNumber(uint aValue, bool aZeroFill)
+    {
+      if (aZeroFill)
+      {
+        Console.WriteLine("0x" + aValue.ToHex());
+      }
+      else
+      {
+        Console.WriteLine("0x" + aValue.ToHex().TrimStart('0'));
+      }
+    }
+  }
+}
diff --git a/source/Cosmos.sln b/source/Cosmos.sln
index 425fd458b..23c0387e3 100644
--- a/source/Cosmos.sln
+++ b/source/Cosmos.sln
@@ -215,6 +215,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ElfMap2DebugDb", "ElfMap2De
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Emile.TestApp", "..\Users\Emile\Emile.TestApp\Emile.TestApp.csproj", "{99A78D26-0277-4882-97BE-F5A0FA90CBCF}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Cosmos.Common.Tests", "..\Tests\Cosmos.Common.Tests\Cosmos.Common.Tests.csproj", "{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -1060,6 +1062,22 @@ Global
 		{99A78D26-0277-4882-97BE-F5A0FA90CBCF}.Release|Mixed Platforms.ActiveCfg = Release|Any CPU
 		{99A78D26-0277-4882-97BE-F5A0FA90CBCF}.Release|Mixed Platforms.Build.0 = Release|Any CPU
 		{99A78D26-0277-4882-97BE-F5A0FA90CBCF}.Release|x86.ActiveCfg = Release|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Debug|Itanium.ActiveCfg = Debug|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Debug|Itanium.Build.0 = Debug|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Debug|Mixed Platforms.ActiveCfg = Debug|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Debug|Mixed Platforms.Build.0 = Debug|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Debug|x86.Build.0 = Debug|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Release|Any CPU.Build.0 = Release|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Release|Itanium.ActiveCfg = Release|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Release|Itanium.Build.0 = Release|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Release|Mixed Platforms.ActiveCfg = Release|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Release|Mixed Platforms.Build.0 = Release|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Release|x86.ActiveCfg = Release|Any CPU
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -1141,5 +1159,6 @@ Global
 		{ABE135D1-ACF8-4C25-A5DF-A96F013242C5} = {45E223F1-F219-4D48-96EC-85E0E0065BE7}
 		{BD054B3B-D183-4C19-BBD3-E853B736818A} = {6A15C540-8278-4B9C-B890-FA57FB6AE6A6}
 		{99A78D26-0277-4882-97BE-F5A0FA90CBCF} = {EE39BC20-06D5-49F7-943A-58C1C1B179D3}
+		{0D2DCE1C-2A34-4CFF-9A33-E9D9B8518D50} = {CAF5EB57-6CAD-446D-8FC7-4C03D4B996A6}
 	EndGlobalSection
 EndGlobal