题意：
简单逻辑电路以及字符串的系列操作
解析：
任务1：按照真值表的内容写出表达式，用与、或、非门对表达式进行逻辑电路的建模并进行优化，需要知道与、或、非门的基本概念以及卡诺图的画法
任务2：a.把自己的真实姓名作为字符串进行输出；b.打印该字符串；c.能够交换内存中字符串；d.接受键盘输入；e.将键盘输入输出；f.简单的计算器，接受输入计算后输出
涉及知识点：
字符串处理，内存管理，数字逻辑，卡诺图
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FIT1047 - Introduction to Computer Systems,
Networks and Security
Assignment-1 Semester 2, 2019
Submission guidelines
This is an individual assignment, group work is not permitted.
Deadline: Assignment 1 due by week-7, Friday 4:00 PM.
Submission format: PDF for the written tasks, LogiSim circuit files for task 1, MARIE assembly files for task 2. All files must be uploaded electronically via Moodle. More details at the end of the assignment specifications.
Individualised exercises: Some exercises require you to pick one of several options based on your student ID.
Late submission:
• By submitting a Special Consideration Form with supporting documentation.
• Or, without special consideration, you lose 5% of your mark per day that you submit late(including weekends). Submissions will not be accepted more than 5 days late.
This means that if you got x marks, only 0.95n × x will be counted where n is the number of days you submit late.
In-class interviews: You will be required to demonstrate your code to your tutor after the submission deadline. Failure to attend & demonstrate will lead to zero marks being awarded to the entire Marie programming part of this assignment. See instructions for Task 2 for more details.
Marks: This assignment will be marked out of 100 points, and count for 20% of your total unit marks.
Plagiarism: It is an academic requirement that the work you submit be original. Zero marks will be awarded for the whole assignment if there is any evidence of copying (including from online sources without proper attribution), collaboration, pasting from websites or textbooks. Further Note: When you are asked to use internet resources to answer a question, this does not mean copy-pasting text from websites. Write answers in your own words such that your understanding of the answer is evident. Acknowledge any sources by citing them. Your work will be submitted and compared with previous students works and also on the internet for plagiarism using Turnitin software. So please make sure the submission is your work.
1. Boolean Algebra and Logisim Task
The following truth table describes a Boolean function with four input values X1,X2,X3,X4and two output values Z1,Z2.
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