hi guys, need some help in sch work.. anyone have any idea what
other real life application which makes use of the (Up/Down)counter
system [those thing that help u count how many space are left in
the car park..]
up to now, i have 2 real life application, the double deck bus and
the car park..but i need more 
pls list down whatever u can think of using this counter system
thanks 