Objectives:<\/p>\n
Understand what you are being asked to do<\/p>\n
Use Logisim to implement the solution<\/p>\n
Design a test plan to verify the circuit functions correctly<\/p>\n
Tasks and Submissions:<\/p>\n
Submission options for the circuit are:<\/p>\n
Make a movie recording that shows you building the circuit (part of the circuit is OK) and shows you testing the circuit documenting all inputs and outputs. Submit in Canvas.<\/p>\n
Required also: Submit the Logisim circuit (the .circ file) in Canvas<\/p>\n
Project report requirements:<\/p>\n
A brief description of the design process you used to obtain the circuits. Be sure to point out why you chose a particular design, along with the steps you took to minimize the amount of hardware required. This includes<\/p>\n
State diagram<\/p>\n
State reduction<\/p>\n
Final (reduced) state table<\/p>\n
Include all design elements, such as truth tables, state diagrams, tables, etc,<\/p>\n
Test the device in the simulator. Include a test plan:<\/p>\n
Include your secret code for verification<\/p>\n
Example inputs expected outputs and what happened when you tested.<\/p>\n
Descriptions, along with a detailed explanation of what simulations you did, what they show, to demonstrate that the circuit works properly under \u201call\u201d circumstances.<\/p>\n
NOTE that all Logisim implementations must meet all labeling requirements, as established at the start of the semester (see Lab 1)<\/p>\n
Project Description<\/p>\n
There are many security and access control devices on the market that attempt to prevent unauthorized access to secured areas. One such device is a key-pad based device. To unlock the door, you must enter a secret decimal code. For example, say a device accepts a 4-digit decimal code, 1234. The device will unlock the door when \u201c1234\u201d is entered, but it will not unlock if \u201c123\u201d or \u201c123411\u201d is entered.<\/p>\n
For your final project, you are to design an access control system based on a sequence of 6 bits that accepts a 1-bit at a time, either 0 or 1. This could be implemented with a 2-button keypad (o and 1), used to enter the binary code.<\/p>\n
A second input functions as the Enter key, which ends the key code entry. As the key is entered, the device outputs Enter = 0 until the input sequence terminates. If the input sequence matches the<\/p>\n
access code, then output Enter =1 (for example LED lights up), which will unlock the door in a full implementation. The secret code is preset: choose your own code (see below).<\/p>\n
After two unsuccessful attempts (i.e. the secret code was not matched), the system shuts down and won\u2019t accept any more bits, and an alarm is triggered. Thus, your circuit has a second output Alarm, which is set to 1 after two unsuccessful attempts.<\/p>\n
Extra credit: Add a reset to the system that presumably only the owner could control: when the reset key is inserted, the system is again enabled and can accept bits again. You can code the reset as either 0 (no key) or 1 (key inserted) for this project.<\/p>\n
Secret code:<\/p>\n
Each of you has their very own secret code: no 2 people in the class can have the same code<\/p>\n
Your code can NOT be a simple sequence of all 1s or all 0s, and must contain a minimum of 2 ones and 2 zeroes<\/p>\n
For this final project, you are allowed to work together on design, but each student\u2019s solution will be unique, because each of you has a different secret code.<\/p>\n
Sign up for you code, be sure you are signed in to your TWU email account and access the shared secret key code signup sheet<\/p>\n
A schematic of the device is shown in the figure below for a secret code of 8 bits..<\/p>\n
Security Control Device<\/p>\n
Security Control Device<\/p>\n","protected":false},"excerpt":{"rendered":"
Objectives: Understand what you are being asked to do Use Logisim to implement the solution Design a test plan to verify the circuit functions correctly Tasks and Submissions: Submission options for the circuit are: Make a movie recording that shows you building the circuit (part of the circuit is OK) and shows you testing the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[10],"class_list":["post-79035","post","type-post","status-publish","format-standard","hentry","category-research-paper-writing","tag-writing"],"_links":{"self":[{"href":"https:\/\/papersspot.com\/blog\/wp-json\/wp\/v2\/posts\/79035","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/papersspot.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/papersspot.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/papersspot.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/papersspot.com\/blog\/wp-json\/wp\/v2\/comments?post=79035"}],"version-history":[{"count":0,"href":"https:\/\/papersspot.com\/blog\/wp-json\/wp\/v2\/posts\/79035\/revisions"}],"wp:attachment":[{"href":"https:\/\/papersspot.com\/blog\/wp-json\/wp\/v2\/media?parent=79035"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/papersspot.com\/blog\/wp-json\/wp\/v2\/categories?post=79035"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/papersspot.com\/blog\/wp-json\/wp\/v2\/tags?post=79035"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}