using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO.Ports;
namespace led
{
    public partial class Form1 : Form
    {
        SerialPort sp = new SerialPort("COM1", 9600, Parity.None, 8, StopBits.One);

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            sp.Open();
            sp.Write("A");
            sp.Close();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            sp.Open();
            sp.Write("B");
            sp.Close();
        }
    }
}