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1. Construct a model of a byte adder based on the bit adder

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1. Construct a model of a byte adder based on the bit adder

CC4002 Information Systems

Coursework 1: Programming in Python

Deadline: 16 January 2017 - submission on WebLearn


This is an individual coursework worth 30% of the total module mark. It requires developing of a program in Python which simulates the behaviour of a digital circuit performing integer addition and writing a report to describe the model, algorithm, data structures, program and testing performed).

Tasks                                                                                               Mark


1.        Construct a model of a byte adder based on the bit adder                         max 10%
2.        Specify an algorithm for integer addition based on binary operation         max 10%
3.        Select suitable data structures to represent the information                      max 10%
4.        Create a program in Python 3 which implement the model of the adder   max 40%
5.        Describe the program                                                                                  max 10%
6.        Test the program with some sample data to demonstrate its behavior      max 10%
7.        Write a report to present the work                                                                max 10%



  1. 1.    Model
  2. 2.    Algorithm
  3. 3.    Data Structures
  4. 4.    Program
  5. Description
  6. 6.    Testing
    1. 7.    Reporting
·         The model must be based on the bit adder from the lecture in Week 3
·         The model may include number of bit adders linked to form a byte adder. 
·         The model can be presented using suitable diagram created using drawing tool or graphics editor of your choice (the bit adder can be a box with input and output only)
  • The algorithm for adding two integers must be based on the use of standard logical operations which have direct hardware implementation (AND, OR, XOR, NOT)
  • It can use additional data processing operations which might be necessary to manipulate the data (i.e., input/output operations, type conversion operations, information retrieval operations, bitwise data processing operations, etc.)
  • The algorithm must be specified using pseudocode, structured English or plain text
  • The algorithm can be illustrated using a diagram
·         The programming should be done using data structures and operations in Python for input/output, character and string processing, logical or bitwise manipulations. 
·         It can use any primitive or complex data structures which might be necessary for holding the data (pairs, lists, strings, dictionaries, etc.)
·         The choice of data structures must be specified in the report.
  • The program must work in a loop, reading two integer numbers, computing the sum of them and printing out the result until instructed to quit
  • The program must check the input data for the data type permitted (representation of an integer) and the data value limitations (the value of the integer must not exceed the actual size of byte-coded integers, i.e. min 00000000 and max 11111111 in Base 2 or min 0 and max 255 in Base 10 for positive integers, min 11111111 and max 01111111 in Base 2 or min -127 and max +127 in Base 10 for signed integers)
  • The program must be implemented in a modular way with separate functions for inputting data, bit operations, integer operations and outputting the result of the calculation
·         The program must be described in terms of its structure and behaviour 
·         It can be presented using text and structural charts, flowcharts or other diagrams as needed
  • The tests must be performed using suitable test data (i.e., normal data, max/min boundary values, wrong data types, wrong values)
  • The testing can be presented using screen shots of the execution
  • The report must present all components of the work – model, algorithm, data, program, tests
  • It must be written in proofread English in good style
  • The report must have a title page, table of content, page numbers and reflection on the individual experience




  1. Written report, submitted by the deadline to WebLearn (one .pdf file only)
  2. Python program, submitted by the deadline to WebLearn (one .zip file containing all Python modules and data files)

Notes on the Assessment

  • The work will be assessed entirely based on the submitted files
  • If no program file is submitted the report will still be assessed for the model, algorithm and data structure (max 40%) which practically means fail
  • If no report is submitted the program will still be assessed at max 40% which practically means fail
  • If both files are present but the program is not working the report will still be assessed but the mark for the program will be set to 0 which means max 60% could be awarded
  • In order to be awarded first class mark the program must implement some more advanced features, such as:

ü  Allowing both positive and negative integers to be entered

ü  Input in both binary and decimal format with conversion to binary

ü  Additional binary subtractor or multiplier

ü  Additional floating point adder, etc.

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  • Title: 1. Construct a model of a byte adder based on the bit adder
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