2个4位数码管电子钟\k.LST ..................\STARTUP.A51 ..................\k.plg ..................\k.OBJ ..................\k.c ..................\STARTUP.lst ..................\k.Uv2 ..................\k.M51 ..................\k.Opt ..................\k ..................\k.hex 2个4位数码管电子钟