Applications for 555 timer

•The 555 timer can be used in many ways
•Common uses are for precision timing, pulse generation, sequential timing, time delay generation

Answer these questions by placing your responses in the comments section.

• What is the applications of timer?
  

• How many pins of IC555?

Pin Configuration:-
     Pin1: ground
     Pin2: trigger input to lower comparator
     Pin3: output high ( 200mA max)
     Pin4: reset latch to low state

     Pin5:gives access to voltage divider 
     Pin6: input to upper comparator
     Pin7: an open collector to discharge
     Pin8: power source