Systems Life Cycle | IGCSE Information and Communication Technology Preparation - Year 11 PDF Download

Systems Life Cycle: Analysis

The initial phase involves gathering information about the existing system, typically employing multiple methods for comprehensive understanding.

Research Methods in Human-Computer Interaction

  • Observation:
    • Characteristics: Observing users as they interact with a system
    • Uses: Understanding user interactions with the current system
    • Advantages: Offers direct, unbiased insights
    • Disadvantages: Time-consuming, might not uncover all issues
  • Interviews:
    • Characteristics: Structured or unstructured conversations with users
    • Uses: Gathering detailed insights into user experiences
    • Advantages: Facilitates in-depth exploration of issues
    • Disadvantages: Prone to bias from interviewees, time-consuming
  • Questionnaires:
    • Characteristics: Structured surveys with predetermined questions
    • Uses: Collecting data from a large user base
    • Advantages: Enables quantitative analysis, efficient data collection
    • Disadvantages: Constrained by preset questions, may have low response rates
  • Examination of Existing Documents:
    • Characteristics: Reviewing system documentation, user guides, or reports
    • Uses: Understanding system design and known issues
    • Advantages: Provides insights into system history, uncovers hidden issues
    • Disadvantages: Documents could be outdated, incomplete, time-consuming to analyze

Identifying Key Aspects of the Current System

  • Inputs: Information or data fed into the system for processing.
  • Outputs: Results or data produced by the system as a result of processing.
  • Processing: Tasks executed by the system on the inputs to generate the desired outputs.
  • Problems: Challenges encountered by users while interacting with the current system.
  • User Requirements: Describes what users expect from the new system.
  • Information Requirements: Specifies the data or information that the new system must handle.

Identifying Suitable Hardware and Software

  • Identifying Suitable Hardware

    • Identify suitable hardware
    • Consider system requirements, compatibility, and cost
    • Justify choices based on user needs and system performance
  • Identifying Suitable Software:
    • Consider functionality, compatibility, and ease of use
    • Justify choices based on user requirements and system efficiency

Question for Systems Life Cycle
Try yourself:
What research method in Human-Computer Interaction involves observing users as they interact with a system?
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The document Systems Life Cycle | IGCSE Information and Communication Technology Preparation - Year 11 is a part of the Year 11 Course IGCSE Information and Communication Technology Preparation.
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FAQs on Systems Life Cycle - IGCSE Information and Communication Technology Preparation - Year 11

1. What are the different phases of the Systems Life Cycle?
Ans. The Systems Life Cycle typically consists of six phases: analysis, design, development, testing, implementation, and maintenance.
2. Why is analysis considered a critical phase in the Systems Life Cycle?
Ans. Analysis is crucial because it involves gathering and understanding the requirements of the system, which lays the foundation for the rest of the project. It helps in identifying problems, opportunities, and constraints.
3. What is the main goal of the analysis phase in the Systems Life Cycle?
Ans. The main goal of the analysis phase is to determine the needs and objectives of the system, identify any potential issues, and propose solutions to meet the requirements of the stakeholders.
4. How does the analysis phase contribute to the success of a Systems Life Cycle project?
Ans. The analysis phase helps in defining the scope of the project, setting realistic goals, and ensuring that the system meets the needs of the users. It also helps in minimizing risks and avoiding costly mistakes during later stages.
5. What are some common challenges faced during the analysis phase of the Systems Life Cycle?
Ans. Some common challenges during the analysis phase include unclear requirements from stakeholders, changing requirements, lack of communication between stakeholders, and inadequate resources for conducting thorough analysis.
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