A453 programming task 1
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This document outlines the requirements for a programming project. It instructs students to create algorithms and code a solution in Visual Basic to solve a stated problem. It also provides guidance on designing test plans, annotating code, and evaluating the solution based on test results. Specifically, it provides details on programming techniques, designing solutions, developing code, and testing and evaluating the completed project. Students are given the task of creating a simple calculator interface that can perform addition and subtraction of integer values up to 999.
A453 programming task 1
- 1. CONTROLLED ASSESSMENT MATERIAL 1 Name:..................................... OCR GENERAL CERTIFICATE OF SECONDARY EDUCATION COMPUTING A453 Programming project You will need to create suitable algorithms which will provide a solution to the stated problem then code your solutions in a Visual Basic. The solutions must be tested at each stage to ensure they solve the stated problem using a suitable test plan with appropriate test data. The code must be suitably annotated to describe the process. Test results should be annotated to show how these relate to the code, the test plan and the original problem. You will need to provide an evaluation of your solution based on the test evidence. 2.3.1 Programming techniques Standard programming techniques You should be able to: (i) Identify and use variables, operators, inputs, outputs and assignments (ii) Understand and use the three basic programming constructs used to control the flow of a program: Sequence; Conditionals; Iteration (iii) Understand and use suitable loops including count and condition controlled loops (iv) Use different types of data including Boolean, String, Integer and Real appropriately in solutions to problems (v) Understand and use basic string manipulation (vi) Understand and use basic file handling operations: open, read, write and close (vii) Define and use arrays as appropriate when solving problems. Task 1 Calculator Create a simple calculator interface with the digits 0–9, a plus sign, a minus sign, a clear button an equals sign and a display. The calculator should be able to perform addition and subtraction of integer values. These integer values should be input by pressing the keys on your calculator interface. The system need only work with values up to 999.
- 2. CONTROLLED ASSESSMENT MATERIAL 1 Name:..................................... 2.3.2 Design Designing a coded solution to a problem: a) Analyse the problem b) Develop suitable algorithms c) Design suitable input and output formats d) Identify suitable variables and structures e) Identify test procedures. You should be able to; (i) Analyse and identify the requirements for a solution to the problem (ii) Design suitable algorithms to represent the solution to a problem (iii) Design suitable input and output formats and navigation methods for your system (iv) Identify the data requirements for your system (v) Identify suitable variables and structures with appropriate validation for your system (vi) Identify test procedures to be used during and after development to check your system against the success criteria.
- 3. CONTROLLED ASSESSMENT MATERIAL 1 Name:..................................... 2.3.3 Development Create a coded solution: a) Fully annotating the developed code to explain its function You should be able to: (i) Develop a solution to the identified problem using a suitable programming language (ii) Demonstrate testing and refinement of the code during development (iii) Explain the solution using suitable annotation and evidence of development. 2.3.4 Testing and evaluation Test your solution: a) To show functionality b) To show how it matches the design criteria c) Identifying success and any limitations. You should be able to: (i) Use a suitable test plan and data to test the function of the system (ii) Test the system against the success criteria (iii) Provide good evidence of test procedures (iv) Modify the system, if required, to meet success criteria where these are not met; (v) Evaluate the system against the success criteria to establish how successful, or otherwise, your implementation has been.
- 4. CONTROLLED ASSESSMENT MATERIAL 1 Name:.....................................
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