Assignment #30

Here is a link to my audio introduction on SoundCloud:

http://soundcloud.com/jsndlcrz/intro

Assignment #33

1. An image is 800 by 500 pixels, and each pixel can be one of four colors. How much memory would it require?
800 X 500 = 400,000 pixels

2 bit-code

2 x 400,000 = 800,000 bits

800,000/8 = 100,000 bytes
100,000/1,000 = 100 kB of memory

2. An image is 800 by 500 pixels, and each pixel can be one of four colors. How much storage space would it require?
100 kB of storage

3. How many different colors could one represent using two, three and four bit codes?
With a 2-bit code, you can illustrate 4 colors.
With a 3-bit code, you can illustrate 8 colors.
With a 4-bit code, you can illustrate 16 colors.

4. When you add one bit to a code, what happens to the number of possible colors?
The number of possible colors will increase if one bit is added to a code.

Assignment #24

1. If you took a picture of your car, could you store that using the ISO 8859-1 character standard? Explain your answer.
No, because the ISO 8859-1 was designed for text while photos have their own set of coding.

2. Write the word Hello using the ISO 8859-1 character standard.

01001000 01100101 01101100 01101100 01101111

a. How many bits did it take?

40 bits

b. How many bytes did it take?

5 bytes

c. Would it take more bytes in memory than in storage?

No, bytes are the same whether they are in memory or in storage.

3. At 10 bits per second, how long would it take to transmit Hello from one computer to another?

40/10 = 4 seconds

4. Which contains more information 100 random bits or 1,000 random bits? Explain your answer.

Both random bits contain no information, so both don't have a significant size.

Assignment #23

Before

After

Before

After

Before

After

More on massive, open, online classes (MOOCs)

George Siemens, a MOOC practitioner and researcher, has thousands of students enrolled in his class and he handles the large number of students by decentralizing. It’s not only up to Siemens to teach the students, but he encourages students to help each other out in different social media, such as Twitter or Facebook. Siemens said he hasn’t found the best model, but he is only experimenting.

I chose this article because I found it interesting how different teachers use social networks so students can help one another. It is easier for students to contact each other on a larger range. This fits under Internet Skills (User skills and Content creation) in our class outline.

Source: http://cis471.blogspot.com/2011/10/more-on-massive-open-online-classes.html

Assignment #18

1. What is the title of the post you chose?

Steve Jobs is an artist

2. What is its permalink URL?

http://cis471.blogspot.com/2011/08/steve-jobs-is-artist.html

3. What tag(s) does it have?

history, steve jobs

4. Why did you choose it?

I chose this article because I'm a huge Steve Jobs fan. His death took people by surprise and made headlines everywhere. I agree that Steve Jobs is an artist because his products speak for itself.

IT literacy definition

IT literacy consists of the skills and concepts a student needs for success in school and after graduation as a professional and citizen.