Lifestyles with Internet and Electronics

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My blog entry entitled "The Other Look of My Computer" has drawn quite an attention to most of my classmates. Many of them are first time to hear about the existence of other operating system other than the traditional Windows. Some actually already know about Linux, but they have not yet encountered a friend or someone the personally know who actually uses the Linux system. If you think you are just like most of my classmates, behold and read this one.


Linux actually existed longer than we have thought. It was developed by then a young computer science student of the University of Helsinki in Finland, named Linus Torvalds, and shared it to the world wide web in the early '90s. Linux is an Open Source software, which means you can copy, modify, and even distribute it at a completely free of charge. Today, Linux has grown from a simple set of codes to a system that supports many critical parts of the World Wide Web. Windows may be what most end users use, but these users don't know that most of the Internet serves and even network firewalls are Linux based because of its sure reliability, unlimited flexibility, rock solid stability and of course, unparalleled cost.


For you who still can't imagine what Linux truly is, I have embedded a video clip which compares the latest Windows Vista and a Linux Distribution, the Ubuntu Linux (the one I installed in my pc).





This clip features the Advanced Graphical User Interface (GUI) of a Linux system. I'm still looking for some applications so that I can also record my Linux session into a video clip so I can post it here in the future.

I hope you enjoyed it.

ANALYSIS:

Experiment 2 is similar to the previous experiment. Before, we are just made to familiarize ourselves with Matlab and its basic mathematical functions. In this second experiment, matrices were now very useful because we were asked to graph elementary signals in STEM and STAIR functions of Matlab, and these signals can be represented through matrices. The difference now in this experiment from the first is that we are asked to give the amplitude, frequency, and sampling frequency of the signal. In getting these parameters of the given elementary signals, we were to code our own program that would yield these requirements. This programming, however, is a feature in Matlab. The use of programming commands such as “FOR”, “LOOP”, and “NEXT” are used now, and they still follow the if-then-else statements of basic programming.

CONCLUSION:

Although we did not expect that programming is possible in Matlab, the syntax of the algorithm is just similar to that of what we previously learned, Visual Basic. Such previous knowledge about basic computer programming language is very useful. Not only the format is almost the same, commands are also close in Matlab and in Visual Basic. Previous lesson in Signal processing, such as the advancing and delaying of a given signal, are also helpful in this experiment.

I don't know if this is final. I think I need to edit it and add more explanations to it to give more emphasis to my points.

Pleas leave some comments. thanks!

c)

%STAIR plot
T = 0:0.25:25
B = 2*sin(T)
stairs(T,B)


d)

%Unit function
n = -3:1:3
y = ones(1,7)
stem(n,y)

e)

n = -3:1:3
x1 = abs(n)
n1 = n - 2

subplot(3,1,1), stem(n,x1)
ylabel('amplitude')
xlabel('n')
subplot(3,1,2), stem(n1,x1)
ylabel('amplitude')
xlabel('n')
subplot(3,1,3), stem(-n1,x1)
ylabel('amplitude')
xlabel('n')



please leave some comments.. thanks!

the bad start

Just right before I lay down to sleep, around past half eleven o'clock, I scheduled my alarm clock to ring at exactly 6:30AM the next morning. But since my sleeping time was quite unstable because of the recent Christmas break, where I sleep around 2-3AM, I wasn't able to sleep right away. There were lots of thoughts running around my mind; which includes most of my subjects: electromagnetics, fluid mechanics, signals, and all my upcoming exams.

forward....

After that very uncomfortable sleep, i woke up past 8 in the morning! Oh no, this wasn't the start I was hoping for this new year, considering I had already 4 or 5 absences in my first subject every MWF. So I hurried my stuff before going to school, hoping I could catch within the allowed minutes considered as only late (that's 15 minutes after the start of the class, after this, I'm already late!). Moments later, I arrived to school safe and sound, and late!!! I arrived exactly 9:00AM, thirty minutes late, or already considered absent. This accounted to another unproductive Friday, not to mention my next class is 4:00 in the afternoon.


fast forward...


After that unpleasant incident, I found myself hanging with my classmates in the computer house, where we waited for our other peers so that we can start a DOTA match. Now that the cast is complete, it was time for some strategies here, gold earning there, and of course, hero kills everywhere. We actually finished playing after our eyes started to sore and our heads starting to ache, and good for us it only took us 3 hours now.


back to reality...


The long wait is over and I found myself now sitting at my chair, seriously listening to our Fluid Mechanics instructor. He asked about our short break, and as expected, most answered it was too short to enjoy. So my life went on, going back to books and notes, trying to survive another day in school.

During the past months, I was trying to explore more about computers, about hardware and software as well. With eagerness about these computer stuff, I found myself reading a book about computer operating systems, specifically on the Linux System. My curiousness rose when I read that most Linux enthusiasts claim that their system are far stable than the traditional Windows. Well, just like most Windows users, I do not intend to switch to another operating system, but I want to give it a little try...

There are a lot of Linux editions, called distributions. One of the more common distribution is UBUNTU, a Debian-based Linux disto (for more information just go to www.ubuntu.com). Trying Ubuntu Linux is so easy than I ever thought it would. It's actually free!!! Just got to their site and download the cd image. It's also a LiveCD, which means you can boot the CD, and try the Ubuntu System without even installing it. Isn't it cool?


I have some few screen shots here, taken from my own Ubuntu System...

This is the Ubuntu desktop. Pretty similar to windows actually.

Some opened windows, including Mozilla Firefox



I also got to update it free. Updates keep my system from known bugs that Ubuntu has discovered. By the way, are you tired of computer viruses? Well, in the Linux world, it's virtually virus free. It's immune to all windows virus, I don't even use an antivirus.


And these are the common programs when I use ubuntu:

1. Pidgin Internet Messenger - the all-in-one messenger


2. OpenOffice.org - the better alternative to MSWord


3. Mozilla Firefox - the safer choice in internet browsing

Windows may be the most popular OS in the market, but popularity does't really always mean to be the best. Linux gives me the option to see other things beyond tradition, things that sometimes really goes beyond our imaginations.