5.1 Assign weights to the objectives

Sl. No.	Objectives	Weights
1	The model should be automatic	8
2	The model should be rectangle in shape	5
3	The model should be attractive	6

5.2 PUGH Chart

Design Objective	Weights	Design 1	Design 2	Design 3	Design 4
Model should be automatic	8	++	+	+	DATUM
Model should be rectangular in shape	5	+	-	+	DATUM
Model should be attractive	6	+	++	+	DATUM
Score(+)		43	29	26	0
Score(-)		0	12	14	0
Total		43	17	12	0

5.3 Justification for giving score to the selected design:-

Design No.	Objective	Score allotted	Justification for score
1	Model should be automatic	8	Single input
2	model should be child friendly	9	Rounded edges and all child friendly
3	Model should be rectangular in shape	5	Casing depicts a rectangle
4	Model should be attractive	6	Attractive design
5	Model should be portable	7	Light weight so children can move it easily

5.4 Selected Design

4.2

5.5 Function tree

5.6 Subsystem Unit

Sl. No.	Sub system
1	Managing of coins
2	Managing of devil
3	indication
4	Casing

5.7 Interaction Details

MOVING UNIT	INDICATION UNIT	HANDLING COINS	CASING UNIT
Spatial	no	yes	no
Data	yes	no	yes
Material	yes	yes	yes

INDICATION UNIT	MOVING UNIT	HANDLING COINS	CASING UNIT
Spatial	no	yes	yes
Data	yes	yes	yes
Material	yes	yes	no

HANDLING COINS	INDICATION UNIT	MOVING UNIT	CASING UNIT
Spatial	yes	no	no
Data	no	yes	yes
Material	no	yes	yes

CASING UNIT	MOVING UNIT	INDICATION UNIT	HANDLING COINS
Spatial	yes	yes	no
Data	yes	yes	no
Material	yes	no	yes