Pugh Charts

Design Criteria	Weight	Datum: 12-lead ECG, Boston Hospital	3-lead ECG, cellphone micro-controller, tab electrodes	Upload to laptop/email, tab electrodes	Replaceable Arduino boards, snap circuitry	Custom circuit amplifier, coin leads, paint indicator
Safety	2	0	0	0	0	0
Reliability	1.5	0	0	0	-	-
Portability	1	0	++	+	++	++
Maintenance	1.5	0	+	+	++	++
Local Manufacturing	1.5	0	+	+	+	++
Usability	1.5	0	+	0	+	+
Modularity	1.5	0	0	0	++	+
Total		0	6.5	4	11	11
Design Criteria	Weight	Rechargeable batteries, snap circuitry, paint indicator	Crank-powered, Upload to cell phone, paint indicator	Shake-powered, coke bottle cap leads, upload to cell phone	Crank-powered, laptop/email, snap circuitry, paint indicator	Rechargeable, laptop/email, snap circuitry, paint indicator
Safety	2	0	0	0	0	0
Reliability	1.5	0	-	-	0	0
Portability	1	+	++	++	++	+
Maintenance	1.5	++	+	0	++	++
Local Manufacturing	1.5	+	+	++	+	+
Usability	1.5	+	+	+	+	++
Modularity	1.5	+	0	0	+	+
Total		8.5	5	5	9.5	10