PUGH CHART

TASK 1: Assign weights to the objectives.

Safety	Weights
Safety	7
Ease ofuse	6
Portability	5
Use of standard parts	4
Cost	6

TASK 2: Write PUGH chart for the alternative designs.

Design Objectives	Weights	Design 1	Design 2	Design 3	Design 4
Safety	7	Datum	-	0	+
Ease of use	6	Datum	-	0	-
Portability	5	Datum	0	-	+
Use of standard parts	4	Datum	-	0	0
Cost	6	Datum	-	+	--
Score (+)		0	0	6	12
Score (-)		0	23	5	18
Total		0	-23	1	-6

TASK 3: Justification for the scores given.

Design No.	Objective	Score Allocated	Justification for the score.
1	Safety	Datum	-
	Ease of use	Datum	-
	Portability	Datum	-
	Use of standard parts	Datum	-
	Cost	Datum	-
2	Safety	-7	Heavy metal finger might damage the keys.
	Ease of use	-6	Complex design not user friendly.
	Portability	0	Same as Datum
	Use of standard parts	-4	Not easily available in market.
	Cost	-6	Expensive part make it costly.
3	Safety	0	Same as Datum
	Ease of use	0	Same as Datum
	Portability	-5	It occupies more space .
	Use of standard parts	0	Same as Datum
	Cost	6	Components are cheap and can be easily purchased.
4	Safety	7	It's Box design make it safer to use.
	Ease of use	-6	Complex circuits.
	Portability	5	Box design make easy to carry.
	Use of standard parts	0	Same as Datum
	Cost	-12	Extra body cover parts are used.

Selected Concept Design