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Computer Science Articles

This page features blog posts about computer science. Can’t find what you’re looking for? Let your favorite tutor know that the WyzAnt community could benefit from a blog post about computer science!
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The One Skill Every American Needs to Learn

Encourage your high school students to learn computer science. The link below explains you why?

http://finance.yahoo.com

Free college classes!

Greetings, scholars!

One of my dad's favorite sayings is, "If something seems too good to be true, it probably is." The website Coursera is an example of why that saying needs the word "probably". The idea of taking real college courses from top-notch instructors at prestigious schools for free sounds impossible, yet students around the world are doing just that.

When I first heard of Coursera, I was skeptical. To try it out, I enrolled in some basic undergraduate courses so that I could see how they stacked up against the classes I took at KU and Emporia State University. I am currently...

Power Problems Cause Failures

During an unexpected one-day storm, years ago, several electronic items were destroyed in my house - causing a few thousand dollars worth of damage:

* Air compressor in my air conditioning unit
* Dishwasher
* Crock Pot
* Clothes washer
* Stereo system amplifier
* TiVo motherboard

There may have been other items damaged in the storm, but these are what were noticed as having worked before the storm, and did not work immediately after the storm. The sad thing is, this damage could have very easily been prevented.

Notice the distinct lack of computer-related devices in the list above?

There...

Everything fails eventually.

You would be shocked at how many friends, relatives and customers come to me with the same complaint: "My hard drive died, did I lose everything?" I've seen the entire range of emotions, and working through grief is a good thing. The sad thing is, these problems are completely preventable.

* Here's the first lesson, even if you don't read any further: hard drives fail.

I could expand that to say that everything fails eventually: your car won't drive for 100 years without a complete overhaul of most functional parts - making it virtually a completely different automobile; your home appliances...

Memory vs. Storage, UPS and Backup

I help a lot of people with their computers: laptops, desktops, servers, you name it! With the diverse range of computer and life experience of my end users, I've noticed one topic keeps coming up: memory versus storage.

It generally starts out with seemingly simple questions: "If I need more memory, shouldn't I just clean up some of my documents or photos?" or "I'm running out of space to store my music, do I need more memory?" Sometimes computer terms can be confusing, ambiguous or just plain gibberish. The nice thing about the memory versus storage confusion is that it can be resolved...

Shortcuts

I'm a big fan of shortcut keys. Years ago, when I first started supporting Macintosh computers professionally, I started working with a team of graphic artists. Now, I'm a relatively fast typist, and am decent with a mouse or trackpad, but these graphic designers were fast - really fast. I couldn't figure out how they could perform relatively complex tasks in Adobe Photoshop and Illustrator on-screen so quickly that it almost seemed like a blur of activity. Mesmerized by the activity on the screen, I initially failed to look down at not only the mouse, but the keyboard.

For the average computer...

Tutoring trends...

For the past few years, I've spent most of my time teaching and tutoring on physics, but I also tutor students in programming languages such as C, C++ and Java. These languages are three of the most difficult to learn due in large part to their comprehensiveness. These and languages very similar to them are the programming languages used to implement most of the highest performing and functionally complicated applications in the world, including operating systems, office suites, high performing websites and smartphone apps.

Prior to becoming a teacher, I put myself through graduate school...

Additional Professional Recommendations Received by Abnel

Welcome to my WyzAnt Blog! In this post I am sharing additional feedback received by professionals with whom I worked in the past.

“Working with Mr. Rodriguez was quite enjoyable. He was professional at all times and his work with the students was unmatched at the time by anyone else here. His knowledge was reflected in how the students embraced him. He was here every day even when the students were not. I highly recommend Mr. Rodriguez because he embodies what an Instructor should be.”

-- February 18, 2011

Christopher J., Help Desk Supervisor, Remington College

“Abnel is a talented teacher...

The Great Bugaboo: File Resolution

Often people have the mistaken belief that images that look great on their web site should also work well when they grab them from their site and provide them to printing service providers. Web images display very well at 72 pixels per inch (often referred to as ppi) on a computer screen but printed images on paper or other substrates work best at 240 ppi and above for various forms of inkjet printers, and 300 ppi and above for offset printing purposes. (There is a little bit of wiggle room in these suggested image resolutions, however scaling an image with correct resolution upwards beyond...

What do you look for in a tutor? Feedback welcome!!

Although I am not a contestant on "Who Wants to be a Millionaire", let me nevertheless ask the audience on this one...

I want to know what makes a tutor more appealing (besides the profile picture). Is it affordability? Is it flexibility in hours? Is it number of years experience in tutoring a particular subject? Is it the ratings given to the tutor by students? Is it age?

Please give me an idea of what I can do for you. Although I am new to this tutoring site, I really want to build more relationships with students who seek assistance in math and other subjects. Your feedback will...

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