MARIE, Memory and Changing IT
Value: 17%
Due date: 15-Jan-2016
Return date: 08-Feb-2016
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Alternative submission method
Task
Total marks: 30

Answer the following questions:

1. A digital computer has a memory unit with 16 bits per word. The instruction set consists of 122 different operations. All instructions have an operation code part (opcode) and an address part (allowing for only one address). Each instruction is stored in one word of memory. [11 marks]

a. How many bits are needed for the opcode? [3 marks]
b. How many bits are left for the address part of the instruction? [3 marks]
c. What is the maximum allowable size for memory? [2 marks]
d. What is the largest unsigned binary number that can be accommodated in one word of memory? [3 marks]

2. Consider the MARIE program below. [9 marks]

a. List the hexadecimal code for each instruction. [3 marks]
b. Draw the symbol table. [3 marks]
c. What is the value stored in the AC when the program terminates? [3 marks]
Hex
Addr Label Instruction
100 Start, Load A
101 Add B
102 Store Temp
103 Load C
104 Add D
105 Add Temp
106 Store F
107 Output
108 HALT
109 A, DEC 5
10A B, DEC 3
10B C, DEC 4
10C D, DEC 13
10D E, DEC 3
10E Temp, HEX 00FD
10F F, HEX 00FE

3. Choose one area of rapid technological change in IT or Computer Science, research and report on recent developments and the outlook for the future in the area that you have chosen. You will need to provide both in text citations and bibliography entries according to Faculty of Business policy (APA format). Your report should be around 500 words. [10 marks]

Online submission via Turnitin is required for this assignment.

Rationale
This assessment task covers topics on CPU operation and Instruction Set Architecture, and has been designed to ensure that you are engaging with the subject content on a regular basis. More specifically it seeks to assess your ability to:
• be able to describe the basic instruction set architecture of a simple computer;
• be able to discuss various programming tools available and their relationship to the computer architecture and;
• be able to discuss the general trends in computing technologies including examples of leading edge developments.
Marking criteria
The following marking criteria will be used to mark this assignment:
Questions Fail ( 50%) Pass (50% - 64%) Credit (65% - 74%) Distinction (75% - 84%) High Distinction ( 84%)
Question 1 Answers are incorrect Total marks available = 11 marks
• Subtract the marks are set in marking criteria for each incorrect or missing instruction value in the code assembly;
Subtract 1 mark for each incorrect or missing symbol;
Question 3 Incorrect answer with no demonstration of understanding the topic. Student demonstrate the understanding, however the calculations are incorrect. Answers are correct, omission of few calculations. Answers are correct and clearly show the calculations
Further, for Question 4, the following marking criteria will be used.
Area Fail ( 50%) Pass (50% - 64%) Credit (65% - 74%) Distinction (75% - 84%) High Distinction ( 84%)
Introduction/
beginning Absent of proper introduction. Background details are a random collection of information: They are
unclear or unrelated to the topic. The introduction doesn't appear to consider the reader. Introduction is adequate and includes some background information, yet it may lack detail and creativity. It may need to do more to catch the reader's attention, or it may not quite fit the focus of the essay. Introduction creates reader interest and is fairly well-developed. It contains some background information and/or details, and it fits the focus of the essay. A well-developed introduction catches the audience's attention and creates interest. The beginning of the essay contains background information so that readers can understand the story's context. A guiding sentence close to the beginning conveys the focus of the essay.
Overall Organisation No organisation present in the report. The flow of the essay from detail to detail is difficult to understand or implies that important information has been left out. Organization is clear. Some transitions are present, while others are either inappropriate or missing. Logical progression of details with a clear and effective order. Transitions are present, but they do not enhance the overall effectiveness of the paragraph Logical progression of details with a clear and effective order that enhances the essay and provides a vivid description of the topic with appropriate and effective transitions.
Style: Flow, tone, word choice Writing does have a lot of mistakes and wrong information. Writing appears rushed or underdeveloped. Writing is clear, but sentences may lack variety. The tone is inconsistent and word choice, while adequate, could be better. While sense language is used, it is not very effective in creating imagery Writing is clear and sentences have varied structure. There is consistent tone and word choice is appropriate with fairly good use of sense language to create imagery. Writing is smooth, skill full, and coherent. Sentences are strong and expressive with varied structure. Consistent and appropriate tone and word choice is used throughout the paragraph. Sense language is used to -show, not tell- the reader what is being described.
Quality of research No research performed. Minimal research is performed. The research consists predominantly of information collection, and making simple correlations of different research work on the topic. Surface research is performed. Author presented mainly description of different research and showed the correlations of the research of the topic. However, the authors failed to speculate the future trends of the research. Research of sufficient depth. Authors identified the research progression, and produce speculation of future research on the topic with lack of confidence. Research in-depth and the beyond the obvious, revealing new insights gained. Author clearly identified the way of the research approaching by the other researchers and clearly predicts in which way the research would be going in future.
References NO references provided. References are seldom cited to support statements.
Format of the document is not recognizable as APA. Although attributions are occasionally given, many statements seem unsubstantiated. The reader is confused about the source of information and ideas.
There are frequent errors in APA format. Professionally legitimate sources that support claims are generally present and attribution is, for the most part, clear and fairly represented.
APA format is used with minor errors. Compelling evidence from professionally legitimate sources is given to support claims. Attribution is clear and fairly represented.
APA format is used accurately and consistently in the paper and on the -References- page.
Assessment item 5