Category Archives: IT 210

IT 210 Week 9 Final Project Currency Conversion

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Consolidate into one document all the sections of the Currency Conversion assignments: requirements (week 2); design, flowcharts and pseudocode (week 4); and testing (week 6).

Incorporate any changes recommended by the instructor.

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IT 210 Week 8 Individual Object-Oriented Design

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Generate an object-oriented design for a system that keeps tracks of your CD and DVD collection.

Identify each of the classes, associated data, and operations for the classes.

Generate the pseudocode for each of the classes as demonstrated on p. 251.Post the assignment as an attachment.

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IT 210 Week 8 CheckPoint Object-Oriented Data and Processes

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Identify a task you perform regularly, such as cooking, mowing the lawn, or driving a car.

Write a short, structured design (pseudocode only) that accomplishes this task.

Think about this task in an object-oriented way, and identify the objects involved in the task.

Identify how you can encapsulate the data and processes you identified into an object-oriented design.

Describe the architectural differences between the object-oriented and structured designs. Which of the designs makes more sense to you? Why?

 

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IT 210 Week 8 CheckPoint Interfaces and Communication Messages

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Understanding object-oriented methodologies is often difficult. You already understand that object-oriented analysis and design emulates the way human beings tend to think and conceptualize problems in the everyday world. With a little practice, object-oriented programming will become second nature to you.

 

As an example, consider a typical house in which there are several bedrooms, a kitchen, and a laundry room—each with a distinct function. You sleep in the bedroom, you wash clothes in the laundry room, and you cook in the kitchen. Each room encapsulates all the items needed to complete the necessary tasks.

 

You do not have an oven in the laundry room or a washing machine in the kitchen. However, when you do the laundry, you do not just add clothes to the washer and wait in the laundry room; once the machine has started, you may go into the kitchen and start cooking dinner. But how do you know when to go back to check the laundry? When the washer buzzer sounds, a message is sent to alert you to go back into the laundry room to put in a latest load. While you are folding clothes in the laundry room, the oven timer may ring to inform you that the meat loaf is done.

 

What you have is a set of well-defined components: Each provides a single service to communicate with the other components using simple messages when something needs to be done. If you consider a kitchen, you see it is also composed of several, smaller components, including the oven, refrigerator, and microwave. Top-level objects are composed of smaller components that do the actual work. This perspective is a very natural way of looking at our world, and one with which we are all familiar. We do the same thing in object-oriented programming:

 

·         Identify components that perform a distinct service

·         Encapsulate all the items in the component necessary to get the job done

·         Identify the messages that need to be provided to the other components

 

Although the details can be quite complex, these details are the basic principles of object-oriented programming.

 

Consider the microwave oven in your kitchen, using the object-oriented thinking described above.

 

Create a table with the following four columns and use the following headings: Top-Level Objects, Communicates With, Incoming Messages, and Outgoing Messages.

 

·         Create rows in the table to fill in the columns for each of the Top-Level Objects found on a microwave.

·         Also in the table explain some of the graphical user interfaces (GUIs) and communications messages that occur during the operation of a microwave.

 

Describe some of the advantages of having a componentized system. For example, what happens if the microwave breaks?

 

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IT 210 Week 7 DQ 1

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Under what circumstances would you use a sequential file over a database? Describe these circumstances. When would a database be more beneficial than a sequential file? Is it possible for the two types of permanent storage to be used interchangeably? Explain your answers.

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IT 210 Week 7 Chapter 5 Programming Problems

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Complete Programming Problems 1 and 2 in Chapter 5, page 158.

Provide the analysis and pseudocode only (no flow-charts are required). This needs to be done as 2 separate problems; do not consolidate into one solution.

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Your solutions should look like the example provided in Appendix E in the Course Materials forum; it must include the program analysis (process, input, and output) and the pseudocode.

IT 210 Week 6 Individual Currency Conversion Test Procedure​

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Generate a set of test inputs and expected results for the Currency Conversion program. Make sure you have test case for each module in your design.  Test positive results as well as negative results (errors). You should include overall test cases; these test cases test the process from start to finish.

 

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IT 210 Week 6 CheckPoint Algorithm Verification

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Answer the following questions about the information in Appendix J in the Course Materials forum:

 

·         What will be printed if the input is 20?

·         What will be printed if the input is 100?

·         What will be printed if the input is 73?

·         What will be printed if the user enters “score”?

·         Is this design robust? If so, explain why. If not, explain what you can do to make it robust.

·         How many levels of nesting are there in this design?

·         Provide a set of values that will test the normal operation of this program segment. Defend your choices.

·         Provide a set of test values that test the abnormal operation of this program segment.

 

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