File list (Check if you may need any files):
cd4021仿真
..........\1.SRC
..........\1.cof
..........\1.dbg
..........\1.hex
..........\1.lk
..........\1.lst
..........\1.mak
..........\1.mp
..........\1.prj
..........\BACKUP
..........\......\main._c
..........\......\main.c.130504084358
..........\......\main.c.130504084546
..........\......\main.c.130504084608
..........\......\main.c.130504085826
..........\......\main.c.130504090236
..........\......\main.c.130504090728
..........\......\main.c.130504091816
..........\......\main.c.130504091824
..........\......\main.c.130504091906
..........\......\main.c.130504091922
..........\......\main.c.130504092652
..........\......\main.c.130504093152
..........\......\main.c.130504093500
..........\Last Loaded cd4021.DBK
..........\cd4021.DSN
..........\cd4021.PWI
..........\main.c
..........\main.lis
..........\main.o