Added some Solidity files........

Pragma solidity 0.5.1 & 0.4.21 & 0.4.24  versions used.

Author: aramb-dev

Computer.sol

@@ -0,0 +1,27 @@
+pragma solidity 0.5.1;
+contract Computer_State{
+    enum State { Running, ShutDown, SavedState, Hibernated, Sleeped, Terminated }
+    State public state;
+    
+    constructor() public {
+        state = State.Running;
+    }
+    function Terminate_Computer() public {
+        state = State.Terminated;
+    }
+    function Start_Computer() public {
+        state = State.Running;
+    }
+    function Stut_Down_Computer() public {
+        state = State.ShutDown;
+    }
+    function Hibernate_Computer() public {
+        state = State.Hibernated;
+    }
+	function Sleep_Computer() public {
+	    state = State.Sleeped;
+	}
+	function Save_Computer_State() public {
+	    state = State.SavedState
+	}
+}

Election.sol

@@ -0,0 +1,46 @@
+pragma solidity ^0.4.21;
+contract Election {
+    struct Candidate {
+        string name;
+        uint voteCount;
+    }
+    struct Voter {
+        bool authorized;
+        bool voted;
+        uint vote;
+    }
+    address public owner;
+    string public electionName;
+    mapping(address => Voter)public Voters;
+    Candidate[] public candidates;
+    uint public totalVotes;
+    modifier ownerOnly() {
+        require(msg.sender == owner);
+        _;
+    }
+    function Election(string _name) public {
+        owner == msg.sender;
+        electionName = "Which Company is the best?";
+    }
+    function addCandidate(string name) ownerOnly public {
+        candidates.push((Candidate(name, 0)));
+        
+    }
+    function getNumCandidate() public view returns(uint) {
+        return candidates.length;
+    }
+    function authorize (address person)ownerOnly public {
+        Voters[person].authorized = true;
+    }
+    function vote(uint voteIndex) public {
+        require(!Voters[msg.sender].voted);
+        require(Voters[msg.sender].authorized);
+        Voters[msg.sender].vote = voteIndex;
+        Voters[msg.sender].voted = true;
+        candidates[voteIndex].voteCount += 1;
+        totalVotes += 1;
+    }
+    function end()ownerOnly public{
+        selfdestruct(owner);
+    }
+}

Messages.sol

@@ -0,0 +1,11 @@
+pragma solidity ^0.4.24;
+contract Message_SEND_AND_RECIEVE {
+    string message ;
+    
+    function SEND(string message_to_send) public {
+        message = message_to_send;
+    }
+    function RETRIEVE() public constant returns(string) {
+        return message;
+    }
+}

Var-Types.sol

@@ -1,30 +1,9 @@
-pragma solidity 0.8.0;
+pragma solidity 0.5.1;
 contract Var_TypesCon {
     string public stringVar = "Default";
     bool public boolvar = true;
     int public intvar = 1;
     uint public uintvar = 1;
     uint8 public uint8var = 8;
-    uint256 public uint256var = 99999;
-    function cstringVar(string memory stringVar1) public {
-        stringVar = stringVar1;
-    }
-    function booltrue() public {
-        boolvar = true;
-    }
-    function boolfalse() public {
-        boolvar = false;
-    }
-    function cintvar(int intvar1) public {
-        intvar = intvar1;
-    }
-    function cuintvar(uint uintvar1) public {
-        uintvar = uintvar1;
-    }
-    function cintvar8(uint8 uint8var1) public {
-        uint8var = uint8var1;
-    }
-    function cuint256(uint256 uint256var1) public {
-        uint256var = uint256var1
-    }   
-}
+    uint256 public uint256var = 99;
+}