Software and Tools for Software Development

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Software and Tools for Software Development

• System Software
• Application Software
• Software for Software Development

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Software Growth

• 1000s of types of software products
• now sold at local discount and even hardware
  stores like Lowes
• price depends on demand and sophistication of
  product

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System Software

• Programs
• Supervisor
• Resident
• Transient
• Manages Resources
• Controls Input/Output
• Communications

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Operating Systems

• Manage resources (files,memory)
• control input and output processes
• lets user put in commands

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Commonly Used Operating Systems (OS)

• MS-DOS (PC-DOS)
• Microsoft Windows
• OS/2
• Macintosh System 7.5
• UNIX/Linux

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OS Classification

• Single User Single Tasking
• Multitasking
• Multi-user
• Multiprocessing

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Memory Management by OS

• Buffer
• Random Access Memory (RAM)
• Virtual Memory
• Paging
• Swapping
• Thrashing

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Other important OS functions

• Printing
• Spooling
• Device Driver Management
• Interrupt Processing
• Security Administration

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Application Software and Packages

• Software that solves a specific problem
• makes the computer useful
• special-purpose to general purpose
• Billion dollar business
• productivity, graphics, business, personal info,
  video, engineering, sound

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So Much More

• Advantages and Disadvantages of Suites
• Accounting Programs
• Paint Programs versus Draw Programs
• CAD and CAM
• Computer-Generated Animation
• Home Entertainment

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Integrated Packages and Software Suites

• integrated packages - combines word processing,
  spreadsheet, dB and graphics into one ( Microsoft
  Works, ClarisWorks, LotusWorks)
• price, common environment are advantages
• less features or versatility are disadvantages

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Integrated Packages and Software Suites

• a suite is a collection of full-featured,
  stand-alone productivity products ( Microsoft
  Office, Lotus SmartSuite, and PerfectOffice)
• common structure and interface are advantages
• more expensive and more disk space are
  disadvantages

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Other Software Applications

• PIM
• Contact Management
• Calendar and Schedule Management
• Task and Project Management
• Mail Merge and Print

Weekly
Schedule
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More Software Applications

• Accounting and Personal Finance
• Painting, Drawing, and Photo-Editing
• CAD and CAM

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Accounting Programs

• large firms automatically computerized accounting
  but for small firms it was to costly
• today with more affordable software like
  QuickBooks, DacEasy and Solomon, small firms
  enjoy the same productivity

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Personal Finance Programs

• keep track of checking accounts, saving accounts,
  loan balances
• financial calculators, categorize expenses, print
  check
• Quicken by Intuit, Microsoft Money

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Painting Programs

• paint programs use a technique called bit mapping
• turn on individual pixels
• pixel is a picture element
• every monitor is made up of pixel
• the number of pixels on the screen is called the
  resolution

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Painting

• can create freehand images on the screen or use
  the prepared shapes
• good for creative artists
• PC paintbrush

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Draw

• Instead of turning on individual picture
  elements, draw programs use vector graphics (i.e.
  do their drawing with vectors)
• objects are created with vectors that can be move
  around or erased easily
• CorelDraw, Adobe Illustrator and Claris MacDraw

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Presentation Graphics

• software for making and delivering presentations
• Microsoft PowerPoint, Adobe Freelance

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Photo Editing

• like a picture created with a high-resolution
  paint program, a digitized photograph or a
  photograph captured with a digital camera is a
  bit-mapped image
• digital image processing software allows you to
  manipulate images
• Adobe Photoshop

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Photo Editing

• can remove red eye, remove imperfections
• crop, distort, combine photographs
• create fabricated images that show no evidence of
  tampering (tabloids)
• experts are questioning whether photographs
  should be allowed as evidence in courts

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3-D modeling Software

• create three-dimensional objects
• objects can be rotated, stretched and combined
  with other model objects to create 3-D scenes
• used in modern films

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CAD/CAM

• Computer-Aided Design/Computer-Aided
  Manufacturing
• 3-D graphics
• engineers, designers and architects
• products range from computer chips to public
  buildings
• when design in completed, translated directly
  into template for manufacturing

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Animation

• creating motion form still pictures
• create frame by frame
• computer automates the repetitive process
• instead of drawing every frame, can create key
  frames and objects and the software fills in the
  gaps
• added 3-D

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More Software Applications
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More Software Applications
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And More Software Applications

• Animation Graphics
• - Morphing
• Home Entertainment

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Digitized Video

• a hardware circuit board on a computer accepts
  input from a TV or VCR and converts the images to
  digital format at a rate of of between 15 and 30
  frames a second, capturing full-motion video
• full-motion video - a term applied to video
  movies that can be edited and shown on a computer
  after being digitized

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Digitized Video

• QuickTime for Macs, Windows and Video
• once the video clips are digitized they can be
  edited, morphed, cropped just like other images
• heavy hardware demands - LARGE hard disk
• good data compression

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The Synthetic Musician

• sound can be digitized - digitally recorded or
  synthesized - synthetically generated
• sound card
• any sound can be captured with an audio digitizer
  and stored as a data file
• to play a digitized sound, convert to analog and
  play through a speaker

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Software for Developing Software

• Programming Languages
• Design Tools
• Computer Aided Software Engineering

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Programming Development

• Define the Problem
• Develop an Algorithm
• Code the Program
• Test the Program
• Prepare Documentation

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Programming Languages

• BASIC
• COBOL
• FORTRAN
• Pascal

• C
• Object-Oriented
• C
• Visual BASIC

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Program

• instructions written in a programming language to
  solve a problem
• many programming languages each has its own
  strengths
• compiled or interpreted

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Questions?