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1. Identify and briefly describe four types of requirements that may be defined for a computer-based system.
2. Discover ambiguities or omissions in the following statement of the requirements for part of a ticket-issuing system:
An automated ticket machine sells rail tickets. Users select their destination and input a credit card and a personal identification number. The rail ticket is issued and their credit card account charged. When the user presses the start button, a menu display of potential destinations is activated, along with a message to the user to select a destination and the type of ticket required. Once a destination has been selected, the ticket price is displayed and customers are asked to input their credit card. Its validity is checked, and the user is then asked to input his or her personal identifier (PIN). When the credit transaction has been validated, the ticket is issued.
3. Rewrite the above description using the structured approach described in this chapter. Resolve the identified ambiguities in a sensible way.
4. Suggest how an engineer responsible for drawing up a system requirements specification might keep track of the relationships between functional and non-functional requirements.
5. Using your knowledge of how an ATM is used, develop a set of use cases that could serve as a basis for understanding the requirements for an ATM system.
State three shortcomings of polynomial interpolation that are improved upon by piecewise polynomial interpolation.
Case Study "Developing Savory Rosti-Crisps at Dreddo Dan's. What are the key issues in resourcing this innovation process?
How do we become good and wise stewards of the land? In the industry of agriculture, economic prosperity often follows good land stewardship.
In the drawer4 package, we used the State pattern to change the behavior of the Canvas Editor based on its state instead of creating subclasses of Canvas.
Chapter introduced the impact of the global digital divide.
Write a for loop that prints the values 1 2 4 8 16 32 64 by increasing the value of a counting variable by a factor of two in each cycle.
1. What is the difference between stand-alone and networked computers?
Show how an 8x1 multiplexer can be constructed from 4x1 multiplexers and 2x1 multiplexers and no logic gates.
Describe formal software testing and the four main stages of formal software testing.
A health care issue that has been in the news lately is the computerization of health records. This probability is being approached cautiously because of sensitive privacy and security concerns, among others.
Consider the education database once again. Show what is involved in deleting an employee.
How do you design and draw a representation of a display screen?
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