Category: Computer Science Homework Help

Building a user interface that meets the needs of a diverse
population can be incredibly difficult. Research the best practices for
developing a universally usable interface, as well as some of the
federal legislation that applies (such as Section 508).

Write a four- to five-page paper in which you:

1. Assess at least five best practices for developing a universally usable interface.
2. Evaluate how Section 508 affects developing user interfaces and assess this compliancy standard’s impact on users.
3. Give three examples of available tools for verifying that your
   interfaces meet universal design guidelines and the advantages and
   disadvantages of each.
4. Examine the practicality of building multiple interface options
   for diverse populations, rather than building one interface that meets
   the needs of the majority of end users.
5. Use at least three quality resources in this assignment. Note:
   Wikipedia and similar websites do not qualify as quality resources.

This course requires the use of Strayer Writing Standards. For
assistance and information, please refer to the Strayer Writing
Standards link in the left-hand menu of your course. Check with your
professor for any additional instructions.

The specific course learning outcomes associated with this assignment are:

• Evaluate the design of a user interface, including usability and accessibility considerations.

1. Design an expanding opcode to allow all the following to be encoded in a 32-bit instruction:15 instructions with two 12-bit addresses and one 4-bit register number650 instructions with one 12-bit address and one 4-bit register number80 instructions with no addresses or registers
2. Convert the following formulas from infix to reverse Polish notation.a. A+ B + C +D− Eb. (A− B) × (C + D) + Ec. (A × B) + (C × D) − Ed. (A − B) × (((C −D×E) / F) / G) ×H
3. Convert the following infix formula to reverse Polish notation and generate IJVM code
   to evaluate it: (5 × 2 + 7) − (4 / 2 + 1)
4. For the 16-bit binary number 1001 0101 1100 0011, show the effect of:
   a. A right shift of 4 bits with zero fill.
   b. A right shift of 4 bits with sign extension.
   c. A left shift of 4 bits.
   d. A left rotate of 4 bits.
   e. A right rotate of 4 bits.
5. A computer uses DMA to read from its disk. The disk has 64 512-byte sectors per track. The disk rotation time is 16 msec. The bus is 16 bits wide, and bus transfers take 500 nsec each. The average CPU instruction requires two bus cycles. How much is the CPU slowed down by DMA?

Attached is the supporting lecture slide.

I’m working on a computer science discussion question and need a sample draft to help me learn.

After reading chapter 18, identify a wireless threat and how to mitigate it. The initial post must be completed by Thursday at 11:59 eastern. You are also required to post a response to a minimum of two other student in the class by the end of the week. You must use at least one scholarly resource. Every discussion posting must be properly APA formatted.

Your responses to other students must be more than a simple “Good job” or “I agree with your post”. They must also not just be “Let me add to your post…” Instead, your responses to each other should do three things:

1. Acknowledge the other student’s post with some form of recognition about what they posted
2. Relate their posting to something you have learned or are familiar with
3. Add to the conversation by asking additional questions about their post, or discussing their topic further

1. Write a few brief notes regarding what you already know about operating systems. Indicate the areas for which you believe you need additional knowledge.

• • How would you define an operating system?
  • What does an operating system typically include?

1. Refer to the Week 2 reading assignments.
   • Summarize the concept of an operating system kernel.
   • Which, if any, of your answers to the above questions actually refer to an operating system kernel?

I’m working on a computer science discussion question and need an explanation and answer to help me learn.

1. What is the central justification for companies to leverage blockchain for loyalty programs?
2. What is one common challenge the videos both shared for companies to understand when looking to leverage this technology for customer loyalty programs?
3. What do you think is a way for companies to work through those challenges?

Web pages designed for desktop computers often end up producing a poor user experience on a mobile device. Information can be lost in the limited space on mobile devices’ small screens due to the dynamic size requirements of our various mobile device screens. This makes designing for mobile media tricky. For example, is it better to create one long page, where users must scroll, or several short pages that users click through? Each style has advantages and disadvantages. For example, scrolling through a page is easy for users; however, large pages can take a long time to load. In these situations, frequently there is no one right answer.

In this Discussion, you will identify approaches that you would take to design a mobile strategy for a business. You will also consider the advantages and disadvantages of various mobile design strategies.

• Review the resources included in the Explore section 
• Imagine you have been asked to design the navigation and page layout/content for a toy company’s mobile website. Identify the strategies that you would use to make the website user friendly.
• Consider the design strategies listed below and create your own detailed strategies for the website’s navigation and page content/layout. Go to the Mobile Web Best Practices 1.0 website for additional ideas.
  • Navigation
    • Navigation bars
    • Navigation mechanisms
    • Lengths of URLs for site entry points
    • Use of external links
  • Page Layout/Content
    • Appropriate use of content (Consider what mobile users are looking for.)
    • Page size
    • Scrolling
    • Background images
    • Color

• Topic 1: Vertical and horizontal markets can benefit from IoT solutions. When these solutions span the breadth of an industry, a holistic approach is achieved. This creates new opportunities in the IoE and provides value to people.Explore the scenarios below. Select two of them and identify whether the scenario is a solution for a horizontal market or vertical market. Share your answers with the class explaining your rationale.
  • An energy management system that automatically adjusts room temperature based on the environment and usage
  • Ingestible microchips that send signals to notify the doctor that the pill was swallowed
  • Electronic sensors on railroad tracks that transmit information to an operations center about track conditions and the speed of rail vehicles
  • Water sprinklers that adjust to the temperature, sunlight, and soil conditions
  • Sensors embedded in roadways to adjust the timing of stoplights according to traffic conditions
  • A shipping management system that tracks the movement, vibration, and light exposure time of milk
  • A system of sensors that track the speed and location of all the players during a sporting event
  • Inventory tracking system in a grocery store that provides real-time updates to shoppers, employees, and vendors

1. Pick one of the regulations from this week or last week and give one reason why it is important and one criticism of the regulation. You do not need to do extensive research for this,

• State regulation of privacy and information security
• State data breach notification
• State encryption regulations
• State data disposal regulations

History of state privacy protection laws.

2. This week we will discuss the role of contracts. From a purely IT perspective, what do you think the value of a software contract is? (Focus on only one of the software contract types mentioned in the textbook: Shrinkwrap, clickwrap, browserwrap, or EULA.

I’m working on a networking discussion question and need an explanation and answer to help me learn.

The Future

COLLAPSE (Links to an external site.)

One of the best ways to look at what the future may hold is to look at where we were in the past. Eighty years ago (mid 1930’s) we had no TV’s, no computers in our homes (computers were extremely limited in what they could do being barely more than basic calculators and took up entire rooms), no freeways, phones were controlled by switchboards, we had party lines (two or more people shared the same phone line), many homes had an “Icebox” that required ice to be delivered to keep the food cold, the medical benefits of penicillin was just being researched, cameras were set up on stands, focused manually and required plates.

Fifty-five to sixty years ago (late 1950’s to early 1960) TV’s were black and white, we had three broadcast channels (no cable), TV dinners were all the rage, large businesses had computers, keypunch cards were used to feed information to the computer (each card contained one line of code, so thousands of cards might be needed for a single program), phones had rotary dials, you called your answering service and spoke to a person to get your messages (if you used a service), watches had internal gears and needed to be wound to work, calculators did only basic mathematical functions and weighed a few pounds, the use of a calculator in an exam was considered cheating, antibiotics are widely available, specialized medications are being developed to treat common diseases, cameras were portable, focused manually and required film.

Thirty years ago (mid 1980’s) TV’s were color, cable provided more options, including specialized content, personal computers were taking off, 512 kilobytes of information could be stored on a 5 1/4″ floppy disk, a vast improvement over using a tape drive, basic programs were available for the computers (including word processing and spreadsheets), the Internet was only heard of by the military and academics, answering machines were external devices attached to the phone, portable or cordless phones were about the size of a one liter bottle and weighed 3-5 pounds, portal phones had to remain within the range of the base signal, calculators were programmable and you might be allowed to use one on an exam (best to ask ahead of time), libraries were physical locations that organized books and journals using card catalogs, specialized medications are being developed to treat rare diseases, cameras were portable, had automatic focus and some developed film instantly (Polaroids)

Today TV’s are in high definition, shows can be requested, 100’s of channels are available, laptops and tablets weighing a few pounds have wireless communications and you might be allowed to use one on an exam (best to ask ahead of time), USB drives hold gigabytes of information, nearly everyone has a cell phone or other movile device weighing just ounces with message, texting and Internet capabilities.You can stream video, run apps and download other content. Information is readily available via the Internet and World Wide Web, library collections are largely digital and most articles and some books are available online. Many medications are available over the counter, cameras are digital and pictures can be printed at home or uploaded to the Internet, families stay in contact via email, online communications (chat, IM, VOIP, etc. ) and social network sites.

The Technological Singularity

What other technologies have changed over the years. How has society changed in response? What changes do you expect in the next ten years? The next 25 years? The next 50 years? Do you believe we are experiencing the Technological Singularity now? Why or why not?