C#

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;
using System.Timers;

namespace LED
{
    public partial class Form1 : Form
    {
        public int i = 0, j = 0, adress = 888;

        public Form1()
        {
            InitializeComponent();
            Reset_LEDs(); 
        }
        private void Reset_LEDs() // Makes all the data pins low so the LED's turned off
        {
            PortAccess.Output(adress, 0);
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            int value = 0;
            value += (int)Math.Pow(2, 0);
            LoadNewPict_D0();
            PortAccess.Output(adress, value);
        }
    }
}

aeman wrote:

value += (int)Math.Pow(2, 0);

aeman wrote:

LoadNewPict_D0();

PIEBALDconsult wrote:

Isn't that just 1?

PIEBALDconsult wrote:

Parallel Port

string s=Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
s=s.SubString(0, s.Length-8);    // drop \Desktop

public static string GetUserFolder()
{
    return 
        Environment.GetEnvironmentVariable("SystemDrive") + 
        Environment.GetEnvironmentVariable("HOMEPATH"); 
}

public const int UserProfile = 40;

[DllImport("shfolder.dll", CharSet = CharSet.Auto)]
private static extern int SHGetFolderPath(IntPtr hwndOwner, int nFolder, IntPtr hToken, int dwFlags, StringBuilder lpszPath);

public static string GetUserPath()
{
    StringBuilder resultBuilder = new StringBuilder(260);
    int num = SHGetFolderPath(IntPtr.Zero, UserProfile, IntPtr.Zero, 0, resultBuilder);
    if (num == -2146233031)
        throw new PlatformNotSupportedException();
    return resultBuilder.ToString();
}