4.1 ESTABLISHING FUNCTIONS :

Sl.no	Sub functions
1	Accept the coins
2	Detect the coins
3	Count the coins
4	collect the coins
5	Store the coins
6	Indicate after coin accepted
7	Indicate when it's storage full
8	Display count of coins
9	Lock and unlock system

4.2 FUNCTION TREE :

4.3 MORPHOLOGICAL CHART :

Sl.no	Functions	Mean 1	Mean 2	Mean 3	Mean 4
1	Detect the coins	Ultrasonic sensor	IR sensor
2	Counting the coins and display	LCD
3	Indication	LED	Buzzer	LCD
4	Lock and unlock system	Lock and key	Rotatory lock and key
5	Accept the coin	DC motor	Servo motor	Stepper motor
6	Eat the coin	Linkage mechanism	Slider mechanism	Pinion and rack mechanism

4.4 GENERATED CONCEPTS :

DESIGN 1 :

DESIGN 2 :

DESIGN 3:

DESIGN 4: