Clock generator 555: use a period almost the same as clock_gen.
tree8b3b01b1ebd494b50d58c4d19f0576e75c29cd68
-rwxr-xr-x 32 .gitignore
-rwxr-xr-x 613376 2008 Spring-Summer Schedule.mpp
drwxr-xr-x - asm
drwxr-xr-x - bb
drwxr-xr-x - circuits
drwxr-xr-x - digital_simulator
drwxr-xr-x - tools