Lab 1 completed
Got 5, 6, 8, 9 keys working.
Timer working
First password working

ISSUE(S):
Key press after first password sets whole password to key value (eg. pressing 5 after "Enter" is displayed sets password to "5555"

SUGGESTIONS(S):
Move timer conditions of state machine into timer ISR, would allow removal of  flag_2s variable
Lab 2 completed