Timer Obj

http://vb.mvps.org/samples/TimerObj/

Long Timer, LED Control etc.,

http://www.hardandsoftware.net/

XOR SWAP ALGORITHM

http://en.wikipedia.org/wiki/XOR_swap_algorithm

Swap value of two variables without using third variable(.NET)

int a, b;
a = 10;
b = 20;
Console.WriteLine("Before Swapping a="+a+" b="+b);
a = a + b;
b = a - b;
a = a - b;
Console.WriteLine("After Swapping a=" + a + " b=" + b);