451103 Information Science and Programming

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451-103 Information Science and Programming

• Allison Kealy
• akealy_at_unimelb.edu.au
• Department of Geomatics
• The University of Melbourne Victoria
• 3010

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Why do this course?
PLEASE TURN OFF ALL MOBILE PHONES
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What we will cover today!

• Course Outline
• Software Development Method
• Introduction to Visual Basic.Net
• Assignment for Visual Basic

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At the end of todays lecture .

• Students should be able to approach a software
  development problem in a systematic way.
• Students should be able to construct a software
  development plan.
• Students will write their first VB.Net program

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Course Outline

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

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Class Activity

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

• Problem
• Your summer surveying job requires you to study
  some maps that give distances in km and some that
  use miles. You and your co-workers prefer to
  deal in metric measurements.
• Write a program that performs the necessary
  conversion.

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Software Development Method

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

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Software Development Method

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

• Specifying the problem requirements forces you to
  state the problem clearly and unambiguously and
  to gain a clear understanding of what is required
  for its solution. Your objective is to eliminate
  unimportant aspects and zero in on the root
  problem.

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document
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Software Development Method

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

• Analysing the problem involves identifying the
  problem inputs, outputs and any additional
  requirements or constraints on the solution.

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document
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Example

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

• Compute and display the total cost of apples
  given the number of kgs of apples purchased and
  the cost per kg of apples.
• Problem Inputs
• quantity of apples purchased (in kgs)
• cost per kg of apples (in dollars per kg)
• Problem Outputs
• total cost of apples (in dollars)
• Formula
• total cost of apples cost per kg x kgs of
  apples

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document
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Software Development Method

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

• Designing the algorithm to solve the problem
  requires you to develop a list of steps called an
  algorithm to solve the problem and then verify
  that the algorithm solves the problem as
  intended.
• Discipline yourself to use top-down design. List
  the major steps or sub problems, then solve the
  original problem by solving each of the sub
  problems.

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document
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Example

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document

• Get the data
• Perform the computations
• Display the results

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Flowchart
flowline

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document
terminal
input/output
processing
decision
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Software Development Method

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and documentation

• Identify the objects and controls you want to
  have on the screen.
• This determines how the user interacts with the
  program.

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Software Development Method

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

• Implementing the algorithm involves writing it as
  a program.
• You must convert each algorithm step into one or
  more statements in a programming language.

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document
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Software Development Method

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

• Testing and verifying the program requires
  testing the completed program to verify that it
  works as desired.
• Dont rely on just one case

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document
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Software Development Method

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

• Maintaining and updating the program involves
  modifying a program to remove previously
  undetected errors.
• Organise all material that describes the program

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document
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Example

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

• Problem
• Your summer surveying job requires you to study
  some maps that give distances in km and some that
  use miles. You and your co-workers prefer to
  deal in metric measurements.
• Write a program that performs the necessary
  conversion.
• Step 1 Prepare a software development plan that
  will enable you to solve this problem

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Class Activity

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

• What is the problem asking us to do?

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document
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Class Activity

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

• Problem Inputs
• Problem Outputs
• Formula

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document
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Class Activity

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document
22
Class Activity

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document
23
Class Activity

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and document
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Implementation

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and documentation

• Create the VB.Net interface for this program. Be
  sure to set the properties for all objects
  correctly.

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Implementation

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

Write the code that will execute. Use the
algorithm to help make this step simpler.
Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and documentation
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Implementation
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Class Activity

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

Write the code that will execute. Use the
algorithm to help make this step simpler.
Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and documentation
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Class Activity

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

Test the program for all cases. What test cases
would you use?
Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and documentation
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Class Activity

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

Include some documentation in the code you have
just written
Specify the problem requirements Analyse the
problem Design the algorithm to solve the
problem Choose the interface Implement the
algorithm Test and verify the completed
program Maintain and documentation
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Assignment

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

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At the end of todays lecture .

• Students should be able to approach a software
  development problem in a systematic way.
• Students should be able to construct a software
  development plan.
• Students would have written their first VB.Net
  program.

32
Class Activity

• Course Outline
• Software Development Method
• Implementation of the Software Development Method
• Assignment

Construct a software development plan for the
assignment.