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Transcript of Stanley Screwdriver HP DeskJet PrinterVW Beetle Annual Production Volume Sales lifetime # parts...
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Stanley Screwdriver
HP DeskJet Printer VW Beetle
Annual Production Volume
Sales lifetime
# parts
Development time
Development team
Development cost
Production investment
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Stanley Screwdriver
HP DeskJet Printer VW Beetle
Annual Production Volume
100,00 4 million 100,000
Sales lifetime 40 years 2 years 6 years
# parts 3 200 10,000
Development time 1 year 1.5 years 3.5 years
Development team 6 175 1,600
Development cost $150K $50 million $400 million
Production investment
$150K $25 million $500 million
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By the end of this chapter, you should: Understand what is meant by engineering
design. Understand the phases of the engineering
design process. Be familiar with the attributes of successful
engineers. Understand the objectives of this book.
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Engineering design is the process of devising a system, component, or process to meet desired needs. It is a decision-making process (often iterative), in which the basic sciences, mathematics, and engineering sciences are applied to convert resources optimally to meet a stated objective. Among the fundamental elements of the design process are the establishment of objectives and criteria, synthesis, analysis, construction, testing, and evaluation. [ABET]
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What is a design process?
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Prescriptive
Descriptive
Design for Electrical and Computer Engineers, published by McGraw-Hill
Copyright 2007 Ralph M. Ford and Chris Coulston
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Design for Electrical and Computer Engineers, published by McGraw-Hill
Copyright 2007 Ralph M. Ford and Chris Coulston
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Identify Problem& Needs
DetermineRequirements
Dorequirementssatisfy needs?
Yes
No
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ProblemIdentification
Research
RequirementsSpecification
ConceptGeneration
Prototypeand
Construct
SystemIntegration
SystemTest
Deliveryand
Acceptance
Maintenanceand
Upgrade
Design
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Is this prescriptive or descriptive?
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Specification SystemArchitecture Logic Design Circuit Design Layout
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Prescriptive or descriptive?
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Software Design Application Operating System Compiler
Hardware Design Architecture Synthesis Compiler
RequirementsAnalysis
Specifications
SystemArchitecture
Interface Design Software Drivers Hardware Drivers
Integrationand Test
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Prescriptive or descriptive?
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RequirementsAnalysis
SpecificationDevelopment
Software Design
Test andVerification
Maintenance
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What is the value of the design process?
How much does it cost to correct problems as process proceeds?
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Cost toimplementchanges
Project lifetime
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Problem ID & customer needs (Ch 2) Research/Problem Analysis (Ch 2) Requirements Specification (Ch 3) Concept Generation & Evaluation (Ch 4)
Design Phase (Ch 5, 6, & 8) Prototype, Construct, & Test (Ch 7)
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Penn State World-Class Engineer Description.
Overview of the book.
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Engineering design is an iterative process.
Design problems are open-ended with many potential solutions.
Design processes represent best practices for realizing a system.
Design processes may be prescriptive or descriptive.
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