// Demonstrates how to use the scankey() and getkey()functions on MicroBoard

#define PC    255
#define SYS   254
#define USER  253

main()
{
   int   k;

   writes("key", 1000);
   loop {
      if(scankey()) {
         k = getkey();
         if('0' <= k && k <= '9') writec(0, k, 100);
         else
         if(k == PC) writes("pC", 100);
         else
         if(k == SYS) writes("sys", 100);
         else
         if(k == USER) writes("User", 100);
      } else writec(0, '.', 100);
   }
}