Encoding Images

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

      500 * 800 = 400,000 pixels,    400,000 * 2 = 800,000 bits

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

500 * 800 = 400,000 pixels,    400,000 * 2 = 800,000 bits

3.  How many different colors could one represent using two, three and four bit codes?

       A two-bit code gives 4 different colors.  A three-bit code gives 8 different colors.  A four-bit code gives 16 different colors.

4.  When you add one bit to a code, what happens to the number of possible colors?

                When you add a bit to the code the number of different colors doubles.

Intro.

My name is Marc Ayala.  I'm enrolled in CIS 275 with professor Larry Press. I'm expected to graduate in Spring 2012, with a bachelor's in Business Administration with a concentration in Information Systems. I like playing basketball, watching the Lakers and eating some King Taco.

http://soundcloud.com/mayala47/intro

Encoding Text

1. If you took a picture of your car, could you store that using the ISO 8859-1 character standard? Explain your answer.
                No, standard code is for text characters.  Image, audio, and video have their own codes.

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 of data

b. How many bytes did it take?

5 bytes of data

c. Would it take more bytes in memory than in storage?
                No, bytes are the same size whether in memory or storage.

3. At 10 bits per second, how long would it take to transmit Hello from one computer to another?
                About 4 seconds (40/10 = 4)

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

                If they are random, they convey no information.

Image Processing

Write a blog post

Tablet PCs will impact they way we learn, it is just a matter of when.  The post I chose focuses on ebooks and the way we learn.  In campuses all over the country, students are being spotted with iPads and other PC tablets.  This technology can impact the way we learn and may change how students will be taught in the future. Studies have shown that students learn more with visual aids.  I think that this will eventually happen, but as the post states, the one thing they are waiting on is for people to become familiar with the technology.   This post falls into internet concepts and deals with technology.


Link: http://cis471.blogspot.com/2011/01/tablet-pcs-will-impact-education-but-it.html

Describe a blog post

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

     Open online classes starting soon at Stanford - 130,000 students in one class

2.  What is its permalink URL?
     http://cis471.blogspot.com/2011/10/open-online-classes-starting-soon-at.html

3.  What tag(s) does it have?
     mooc, stanford

4.  Why did you choose it?
     I was interested in how the class will be taught.  I took an online class before and wanted to know how  130,000 students were going to be involved in the class.  I like how at the end of the class, they can be ranked in how well they performed in the class.  If this online course works for 130,000 people than this will impact college courses world wide.

http://cis471.blogspot.com/2011/10/open-online-classes-starting-soon-at.html

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