introduction to engineering drawing and design

... Chapter 1: Introduction to Systems Analysis and Design PowerPoint Presentation for Dennis, Wixom, & Tegarden Systems Analysis and Design with UML, 3rd Edition Copyright ... Inc All rights reserved SDLC: Design Develop a design strategy Design architecture and interfaces Develop databases and file specifications Develop the program design How will we build the system? ... methodology that maps out when and how to use the various UML techniques for object-oriented analysis and design • A two-dimensional process consisting of phases and flows – Phases describe how

Ngày tải lên: 16/05/2017, 13:42

... managers and executives Factual Format Administrative Format I Introduction II Methods and procedures I Introduction II Conclusions and recommendations III Facts and details III Summary and discussion ... Intended for system owners and users 10-30 Length of the Written Report • To Executive-level managers - one or two pages • To Middle-level managers - three to five pages • To Supervisory-level managers ... discussion of facts and details IV Discussion and analysis of facts and details IV Methods and procedures V Recommendations VI Conclusion V Final conclusion VI Appendixes with facts and details 10-32

Ngày tải lên: 16/05/2017, 14:46

... criteria Service IV V Mandatory requirements, features, and criteria Essential requirements, features, and criteria Desirable requirements, features, and criteria Mandatory requirements Essential ... system design technique that decomposes the system’s processes into manageable components – Synonyms (although technically inaccurate) are top-down program design and structured programming – Design ... Requirements and features A Hardware B Software C 11-29 Mandatory requirements, features, and criteria Essential requirements, features, and criteria Desirable requirements, features, and criteria

Ngày tải lên: 16/05/2017, 14:46

... 12-49 Design Units Design unit – a self-contained collection of processes, data stores, and data flows that share similar design characteristics – A design unit serves as a subset of the total ... develop a physical DFD to show the event processes (from Chapter 9) that are assigned to that processor • All but simple processes should be factored into design units and modeled as a more detailed ... whose inputs, outputs, files and databases, and programs can be designed, constructed, and tested as a self-contained unit – Ultimately, design units must be integrated into a whole system 12-50

Ngày tải lên: 16/05/2017, 14:46

... definition of how: – Files and databases are to be developed and used to store data – The file and/or database technology to be used – The administrative structure set up to manage the data resource ... Goals of Database Design • A database should provide for efficient storage, update, and retrieval of data • A database should be reliable—the stored data should have high integrity and promote user ... time (use to store the data and time from the computer’s system clock) not supported TIMESTAMP not supported Data Types for Different Database Technologies (cont.) Logical Data Type to be stored

Ngày tải lên: 16/05/2017, 14:46

... Output Design Design and and Prototyping Prototyping McGraw-Hill/Irwin © 2008 The McGraw-Hill Companies, All Rights Reserved 14-2 Objectives • Distinguish between internal, external, and turnaround ... validate and test outputs using some combination of: Layout tools (e.g., hand sketches, spacing charts, or CASE tools Prototyping tools (e.g., spreadsheet, PC DBMS, 4GL) Code generating tools (e.g., ... returned by the customer with payment 14-10 External Document 14-17 Output Design with a Report Writer Tool (continued) 14-18 Output Design Guidelines Outputs should be simple to read and interpret

Ngày tải lên: 16/05/2017, 14:46

... interfaces) 15-20 Automated Tools for Input Design and Prototyping • Old Tools – Record Layout Charts – Display Layout Charts • Newer Prototyping Tools – Microsoft Access – CASE Tools – Visual Basic ... data capture, data entry, and data input • Identify and describe several automatic data collection technologies • Apply human factors to the design of computer inputs • Design internal controls ... above Data is entered o a touch screen display or handheld device Data entry users either touch commands and data choices or enter data using handwriting recognition On PCs, touch screen choices are

Ngày tải lên: 16/05/2017, 14:47

... Identify several important human engineering factors and guidelines and incorporate them into a design of a user interface • Integrate output and input design into an overall user interface that ... command language that can be used to invoke actions – SQL • Mnemonic syntax is built around commands defined for custom information systems – Commands unique to that system and meaningful to user ... Interfaces Styles and Considerations • Windows and frames • Menu-driven interfaces – – – – Pull-down and cascading menus Tear-off and pop-up menus Toolbar and iconic menus Hypertext and hyperlink

Ngày tải lên: 16/05/2017, 14:47

... Design Class Diagram • Add design objects to diagram • Add attributes and attribute-type information to design objects • Add attribute visibility • Add methods to design objects • Add method ... functionality to read and write to a database 17-5 System Class - handles operating systemspecific functionality Design Relationships Dependency • A dependency relationship is used to model the ... persistence, and system classes • Understand the concepts of dependency and navigability • Define visibility and explain its three levels • Understand the concept object responsibility and how it

Ngày tải lên: 16/05/2017, 14:47

... by built and tested prior to programs that use that it • Roles – Network designer • Designs LAN and WAN connectivity – Network administrator builds and tests • Network architecture standards • ... (throughput and response time) Peak workload performance Human engineering Methods and procedures Backup and recovery Audit testing certifies that the system is free of errors and is ready to be placed ... Implementation Phase – Prepare Conversion Plan • Plan for how to convert from old system to new system – – – – How to install and populate databases How to train users Finalize documentation Conversion issues

Ngày tải lên: 16/05/2017, 14:47

... (p 340) and K J Pascoe and Van Nostrand Reinhold Co for permission to reprint Fig A1.41 (p 344) * M F Ashby and D R H Jones, Engineering Materials 1: An Introduction to their Properties and Applications, ... Engineering Materials An Introduction to Microstructures, Processing and Design Second Edition by Michael F Ashby and David R H Jones Department of Engineering, Cambridge University, England ... of B (3.2) 26 Engineering Materials and WA + WB = 100% (3.3) Sometimes it is helpful to define the atom (or mol)%, given by XA = atoms of A × 100% atoms of A + atoms of B (3.4) and so on The constitution...

Ngày tải lên: 14/03/2014, 14:20

... (p 340) and K J Pascoe and Van Nostrand Reinhold Co for permission to reprint Fig A1.41 (p 344) * M F Ashby and D R H Jones, Engineering Materials 1: An Introduction to their Properties and Applications, ... Engineering Materials An Introduction to Microstructures, Processing and Design Second Edition by Michael F Ashby and David R H Jones Department of Engineering, Cambridge University, England ... of B (3.2) 26 Engineering Materials and WA + WB = 100% (3.3) Sometimes it is helpful to define the atom (or mol)%, given by XA = atoms of A × 100% atoms of A + atoms of B (3.4) and so on The constitution...

Ngày tải lên: 27/06/2014, 17:20

... systems engineering, electrical engineering, electrochemical engineering, materials engineering, manufacturing engineering and mechanical engineering and an introduction to engineering economics The ... to society’s problems This text covers introductions to bioengineering, chemical engineering, civil engineering, computer and electronic engineering, control systems engineering, electrical engineering, ... contribute toward achieving the purpose of engineering, which is to design useful objects and systems and to understand, predict, and control their function in useful ways? This question introduces into...

Ngày tải lên: 28/06/2014, 22:20

... relevant topics include amplifier [11] and oscillator [12] design principles, power supplies and voltage regulation [13], and different diode detectors Some understanding of elementary logic design and ... Introduction to RF Equipment and System Design For a listing of recent titles in the Artech House Radar Library, turn to the back of this book Introduction to RF Equipment and System Design ... prior to delving more deeply into this book Primarily, this introduction is devoted to showing some of the goals and working methods of systems engineering as applied in various RF and microwave design...

Ngày tải lên: 05/11/2013, 12:15

... oflines and angles, properties of parallel _ and perpendicular lines, and definitions of arcs, etc., are all that are needed to generate these linkages Compass, protractor, and rule are the only tools ... construction lines from point C) to C2 and from point D) to D2 Bisect line C) C2 and line D)D2 and extend the perpendicular bisectors in convenient directions The rotopole will not be used in this ... any Grashof condition and will usually require the addition of a dyad to control and limit its motion to the positions of interest Compass, protractor, and rule are the only tools needed in this...

Ngày tải lên: 08/08/2014, 12:23

... the position vectors Zl and Zz The angle corresponds to the Equations 5.31 can be solved using the approach of equations 5.27 and 5.18, by changing W to U and Z to S and using the definitions ... inserted to get the coordinates of vectors W and Z, and a second time with values from equation 5.31 in the matrix to get the coordinates of vectors U and S Equations 5.2 are then solved to find ... linkage (crankshaft, connecting rod, piston) used in every piston engine and shown in Figure 13-3 (p 601) This linkage has two toggle positions (top and bottom dead center) giving it two branches...

Ngày tải lên: 08/08/2014, 13:20

... 244) It and equation 6.6 are all that are needed to solve for everything else In this example link is the driver, and 8z and OOz are given for the "freeze frame" position shown We wish to solve ... assume friction to be negligible in this example Any force or velocity vector applied to point A can be resolved into two components along these two axes which provide a translating and rotating, ... (AA) using equations 7.4 and 7.6 by breaking AA into its normal and tangential components (Steps 1and 2) We then used the point (A) just solved for as a reference point to define the translation...

Ngày tải lên: 08/08/2014, 13:20

... applicable to the fall with slight modification To convert rise equations to fall equations, it is only necessary to subtract the rise displacement function s from the maximum lift h and to negate ... beyond hand calculation abilities With the availability of a design aid to solve the equations such as program DYNACAM, polynomials have become a practical and preferable way to solve many cam design ... workpiece to stop and thus are capable of higher throughput speeds All operations are performed on a moving target Any tools which operate on the product have to "chase" the moving assembly line to...

Ngày tải lên: 08/08/2014, 13:20