At first, I don't have much knowledge regarding Compsci. The first thing that comes in my mind is computers, that's all. I didn't expect that there are so much things to discuss and learn about computers and its relation to the society.  Within a short period of time, I've learned and realized  so much things.
Here are some of the things that I've discovered/learned.

•  I didn't know that desktop is also called as Fix.

•  In order for you to know if the computer is a good investment, you must not only consider its physical appearance. You should inspect if it has a good quality processor, RAM, and hard drive. I also learned about the standard unit for it and how important they are when it comes on choosing you computer. 

• Radiation filters cannot protect you from radiation. It only helps you to  lessen the radiation in your monitor. You need a more thicker material like glass filters.

• Monitors emit VLF or Very Low Frequency and ELF or Extremely Low Frequency.

• Screen savers are made so that you will not display the same thing for a long time because your computer might burn in. Nowadays, screen savers  are just for entertainment. Acetate is used for black and white cellphone while wallpapers are for colored cellphone. 

• Today, technology becomes smaller. Different companies are trying to come up with a gadget that is handy and consumes less space like cellphones, computers, laptops, and more.

• On deciding whether you will replace or repair your computer, you must consider different things. If your computer is 5 years and above, you must decide to buy a new one because if you decide to repair it, you are not sure that it will never encounter any problems again. Also, you need to first ask yourself if the problem that you are having is hardware related or software related so that you will know how much it will cost.

• I also learned that deleted files can be recovered.

• T avoid being hacked, don't choose the most common thing when it comes to creating your passcode like your birthday, relative names, interests because it is easy to hack. You must change your passcode often so that your account will not be easily accessed by other people. 

• Social networking sites have different advantages and disadvantages in our lives. It depends on the person on how he will protect himself. 

• Facebook is hackable. You should not reveal too much information about yourself because it will say on the internet forever. Don't post something that you will regret in the future. For example, pictures of yourself that is malicious to other people. 

• Also, social networking causes to be less in touch with friends because it is harder to relate rather than talking in person. It can also cause misunderstandings among your friends. For example, you post a quote to your friend, then your friend misunderstood it, you will probably argue with one another.

I hope that I can use these new knowledge that I have learned in my daily life. =)

Disadvantages of Social Networking(Facebook)

Here are some stories on how facebook affects one's life.

 1.Teenage girl is first to be jailed for bullying on Facebook

According to: http://www.guardian.co.uk/uk/2009/aug/21/facebook-bullying-sentence-teenage-girl

A teenager who posted death threats on Facebook has become the first person in Britain to be jailed for bullying on a social networking site.

Keeley Houghton, 18, of Malvern, Worcestershire, has been sentenced to three months in a young offenders' institution after she posted a message saying that she would kill Emily Moore. She pleaded guilty to harassment.

On 12 July, Houghton updated her status on Facebook to read: "Keeley is going to murder the bitch. She is an actress. What a fucking liberty. Emily Fuckhead Moore."

Moore, also 18, had been victimised by Houghton for four years, the court heard, and had previously suffered a physical assault as well as damage to her home.

Worcester magistrates court heard how two days before the threat was made, Moore was in The Vaults pub in Malvern when she saw Houghton staring at her. Sara Stock, prosecuting, said: "Later when Emily was sitting on her own the defendant came over and sat next to her and asked her: 'Are you Emily Moore? Can I have a huggle?' Emily told the defendant to leave her alone otherwise she would call the police. Keeley then told her: 'I'll give you something to ring the police about.' "

Houghton wept throughout the 15-minute hearing. The court was told she had two previous convictions in connection with Moore. In 2005 she was convicted of assaulting her as she walked home from school and was subsequently expelled from school. Two years later she was convicted of causing criminal damage after kicking Moore's front door.

District judge Bruce Morgan told her: "Bullies are by their nature cowards, in school and society. The evil, odious effects of being bullied stay with you for life. On this day you did an act of gratuitous nastiness to satisfy your own twisted nature."

Houghton, who is unemployed, was also issued with a restraining order banning her from contacting Moore.

The court heard how she told police that she wrote the death threats while she was drunk late at night and had no memory of it. But when police examined internet records they discovered Houghton wrote the comments at 4pm on 12 July and kept them on her Facebook page for 24 hours.

At an earlier hearing Houghton defended herself and told magistrates: "I'm here for trying to apologise. She threatened to call the police and all I was doing was saying sorry."

Edward Gaynor-Smith, defending, told the court Houghton now "fully admitted her involvement" in the case.

The Metropolitan police has hired a consultancy to help monitor social networking sites for evidence of crime.

2. Teens Suicide Caused By Facebook Bullies

According to: http://www.allvoices.com/contributed-news/4191027-teens-suicide-caused-by-facebook-bullies

Fifteen year old Holly Grogan was tormented and tortured by bullies at school she changed schools to try and get away from the bullies. But, the name calling and the bulling followed her there, they left nasty messages on her Facebook social networking account and this was all too much for Holly who on Wednesday September 16, 2009, went to a dual carriageway and jumped 30ft from a road bridge that was near her home. After the fall she was hit by passing traffic and died.

As can be expected reports are saying that Anita and Steven Grogan from Longleven, Gloucester, are said to be 'devastated by the death of their daugher' which was as a result of her being bullied and tortured at school and through Facebook were she was sent lots of abusive and nasty messages posted to her Facebook Wall.

One friend of Holly's 16 year old Chloe told a 'Daily Mail Newspaper' reporter about the fee paying catholic school that Holly had left to try to escape from the bullies who were making life unbearable for her. Chloe also said 'Holly always had a big smile and she always did really well in school and the other girls were always picking on her. She wasn't very confident and that was part of the problem. The girls would gang up on her and call her names and she never had anything to say back, because she would just freeze up. They would leave messages on her Facebook wall calling her names, though they have probably deleted them all now. Chloe also told the reporter that the bullies at her old school just told their friends at her new school to keep on bulling her and they did. Supposedly their was a girl at school that use to bully her was crying because of what happened to Holly. But, its a little late to be crying about the bullying now'.

There has been many tribute messages left at a local newspaper website. One of the messages from Tom her 17 year old brother said 'that her family loved her to bits'. Holly's parents said in a statement 'Holly had a beautiful smile and infectious laugh and would be remembered by everyone who was proud of her and had the privilege of knowing her'.

The head teacher at St Edwards, Holly's School, said 'staff and students were shocked by the news' but would not comment on whether staff knew about the bullying that Holly was going through.

3. Creepy Facebook Stalkers

According to: http://www.experienceproject.com/stories/M-Starting-To-Regret-Belonging-To-Facebook/1072676

I think Facebook is a good vehicle for creepy people. They don't need to be brazen at all to facebook stalk you, and all they need is a first and last name. When I first joined facebook, I left my profile to be found by anyone. That was a mistake. I got two messages from two different Turkish men asking me to marry them. After that, I blocked them and changed my profile so it could only be found by friends of my friends.
Recently, I changed it back since people I knew were having a hard time finding me. I wish there was a way so that you have to send me a message in order to send a friends request. The day I changed my profile to being able to be found by anyone was the day I regreted it. I got a strange person asking to be my friend. I didn't know him, and he had about 6 friends. I asked how he knew me or why he added me. He said that he was a nature photographer, and knew I was too. Short story, I am not a 'nature photographer' I sometimes photograph insects and other things with my macro lens. He said he was going to post some photos, and nothing sexual, he was married. He deleted that comment and changed it to "I'm going to post some photos, maybe we can exchange photos. I am only interested in doing this as a professional" I thought that was a bit strange. Stranger was when he posted photos with wildly different styles, and stranger was I found them all on one website. All of them were taken from different photographers. I confronted him on this and all he did was delete them, so I deleted and blocked him. What a weird guy.

4. Beware of Facebook Stalkers

According to: http://www.urlesque.com/2010/05/17/beware-facebook-stalkers-internet-horror-stories/

A while back, I received a friend request from a guy whom I had been acquainted with in high school. He and I weren't in the same circle of friends back then, but we shared a few classes and passing conversations together over the years. I decided to add him and we started to reminisce about "the good old days" and catch up on the latest happenings of our former classmates.

Soon enough, we found ourselves messaging each other just about every day and he soon asked me out on a date. I enjoyed our conversations together and thought that we might actually hit it off. Unfortunately, our in-person rendezvous was a complete disaster.

Afterward, I decided to back off and not speak to him for a while. I hoped that he would get the hint that I wasn't really interested in continuing our chats. Even with my attempt at avoiding him, however, I kept bumping into him around town. He seemed to catch me at random locations like the grocery store or my gym. Strangely, we had never run into each other like that before we started speaking online.

When he ran into me at a club outside of town, I realized that these were no accidental meetings. Every time he ran into me, I had just mentioned going to that place on my Facebook status or a friend had posted a message on my wall implying my location.
He had been tracking me via the internet for over a month after that date. Needless to say, I deleted him from my friends list immediately, secured my profile and posted a status update to warn all my friends about him.

5.   Cold Turkey for a Facebook Addict

According to: http://news.bbc.co.uk/2/hi/8299362.stm

I'd done it. My (virtual) life was over. After two years on the online social networking site Facebook, I'd taken the plunge and killed off my account - in Facebook speak, I was "deactivated".

It hadn't all been bad; we'd had some good times. I'd enjoyed a bit of snooping as much as the next person and found it useful enough as a way to check out potential love interests, flog unwanted stuff and organise the odd shindig or three.

As a newbie to online social networking, my first few forays into Facebook had been cautious and brief. It had been a guilty pleasure - an enjoyable escape which tapped into a basic urge to share and compare.

Facebook has an estimated 250million users worldwide

But over two years, I'd turned into a Facebook fiend, uploading over 30 photograph albums, posting countless inane status updates and acquiring hundreds of online "friends" (350, to be exact).

I'd got sucked into semi-stalkerdom and felt something akin to separation anxiety if I ever found myself offline for more than a few hours. What had been my favourite waste of time had morphed into a demanding and anti-social addiction.

The turning point came when I completely forgot about a long-planned reunion with a friend one evening because I'd been sidetracked by mindless Facebook mulling. This is ridiculous, I thought. Surely social networking was supposed to enhance my social life, not to trash it?

And the whole set-up had started to grate: so much pathetic posturing, fakery and careful cultivating of one's online "brand". People posted anything and everything, surrendering their own privacy and that of their friends. I didn't NEED to see pictures of strangers' weddings or the drunken holiday antics of mates' mates.

'Liberated'

I told myself that I'd managed perfectly well pre-Facebook and resolved to return to simpler times. I would still keep in touch with people I liked. I had a mobile and I was perfectly capable of bashing out an e-mail or penning a letter. And so I decided to deactivate. It only took a few clicks and was pretty painless.

Facebook demanded to know why I'd left - it even gave me a helpful little list of possible reasons why I might have fallen out of love and suggested ways around them.

But my mind had been made up. I wanted to see if I could cope without - for at least a week. It gave me the option to return at any time and resurrect my account, but I felt liberated.

Is sending a letter really such a hassle?

One person, who thought I'd removed them alone from my list of Facebook friends, sent me an anxious text message, citing - and apologising for - all the things they had done which might have offended me and prompted a "de-friending".

Leaving Facebook was clearly seen as a BIG deal to them, indicative of something being "not quite right". I was flattered that people cared about me and felt a little ache for the ol' Facebook camaraderie.

Of course, not everyone worried about my departure - or even noticed. One of my flatmates was perplexed after seeing that their Facebook friend count reduced by one, but hadn't investigated who might have gone AWOL.

But one day into Facebook cold turkey and my fingers had itched to log back on. I felt bereft and out of the loop. I missed the online chatter of which I had become so contemptuous.

'Lazy'

Sure, I could have messaged people direct, but that is the beauty of social networking sites - while they make spies/personal detectives of us all, they also cater to the lazy. They allow you to be passive, throwing information at you which would otherwise take time and effort to seek out.

Facebook had made one-stop communication so easy and many of my friends were devotees; some only communicated via the site. Would people invite me to events if it meant they had to send me a separate invite rather than include me in a Facebook scattergun missive?

I knew I could cope without Facebook - just

I thought I'd enjoy bags of free time in a Facebook-free life, but instead I've just reverted to other distractions, like trashy celeb magazines.

And, even though I couldn't be actively involved in its machinations, I still found myself gassing about Facebook. I might not have been frittering away hours browsing its pages, but the site - and my departure from it - became my favourite topics of conversation. What did other people think about Facebook? What did they think about me leaving?

I found myself leaping on any Facebook-related story in the news with disproportionate enthusiasm. It proved hard to let go completely. The break (up) was tough and eventually - well, after just 10 days to be honest - I found myself reactivating my account.

Caroline lasted just 10 days without a fix

My world hadn't fallen apart by going offline. I managed to stay in touch with the people I cared about, even if took a little more energy on my part (although I never did get round to penning any letters).

But absence had made the heart grow a little fonder. My package holiday-sized abstention reminded me how useful Facebook could be, particularly for organising and remembering events.

I confess my heartbeat had quickened a little when I logged in. When my homepage fired up, I'd felt a small surge of joy at being reunited with my long-lost friend(s). I was back and I was downright curious: what had I missed?

Not a huge amount as it turned out. It was like I'd never been away: acres of holiday snaps, numerous links to interesting news stories and YouTube marvels, and some funny/not-so-funny status updates.

I logged out within a few minutes. I've been back since, uploaded some pictures, dashed off a few messages, commented on a few links and acquired a couple of new Facebook friends.

But I no longer had the same urge to plunder the latest online goings-on and see what people are up to quite so regularly. I knew I could cope without Facebook - just. And if it all gets too much and I feel myself slipping back to my old ways, I can always take another break.

True or False?

Law and order  is about the murder of a psychologist reveals evidence that the killer had access to secret information possessed by the victim. Investigating, the detectives end up at the door of a computer company which sells information about its clients. The D.A.'s office must prove that such transactions are dangerous violations of privacy -- and that the computer firm is just as liable for the psychologist's death as the actual perpetrator. Briscoe and Green believe the fatal stabbing of psychologist Tracy Conley may be linked to confidential client information on her computer. They learn one of the files on her hard drive has been tampered with since her death - information that would have ensured a known rapist spends another five years behind bars. 

I need to research about the different issues about the computer myths that are related to Law and Order.

•  Files are still recovered in the drive after deleting it.

According to http://www.akdart.com/priv9.html, many computer users, including some who should know better, are unaware that deleted files can be recovered — undeleted — and can yield information which can be used against the person who deleted them.  This information can be as common as a deleted email message or as important as sensitive business records or government transactions.  Those who are less technically astute may assume that if a file doesn't show up in a directory (or folder), it's gone forever.  Few people know that deleted files are not erased; the data is just hidden, and the files can be undeleted.  Still fewer users know how to undelete files, either to recover from accidental deletion or to "go fishing" for interesting data.

              

 Another source is http://www.rickysays.com/recover-deleted-files, it said that when you delete a file, Windows only marks the file as deleted, but doesn't actually remove it from your system. Those files are only truly deleted when other data is saved to the same location on your hard drive.

If you accidentally delete files from your system, they can usually be undeleted - even if you deleted them from your recycle bin - as long as you attempt to recover the files shortly after you delete them, and before Windows saves other data in those same file locations on your hard drive.

This issue is TRUE.

• The more information you post on the internet, the more safer you are.

According to http://www.us-cert.gov/cas/tips/ST06-003.html, although the features of social networking sites differ, they all allow you to provide information about yourself and offer some type of communication mechanism (forums, chat rooms, email, instant messenger) that enables you to connect with other users. While the majority of people using these sites do not pose a threat, malicious people may be drawn to them because of the accessibility and amount of personal information that's available. 

The more information malicious people have about you, the easier it is for them to take advantage of you. Predators may form relationships online and then convince unsuspecting individuals to meet them in person. That could lead to a dangerous situation. The personal information can also be used to conduct a social engineering attack. Using information that you provide about your location, hobbies, interests, and friends, a malicious person could impersonate a trusted friend or convince you that they have the authority to access other personal or financial data.

Additionally, because of the popularity of these sites, attackers may use them to distribute malicious code. Sites that offer applications developed by third parties are particularly susceptible. Attackers may be able to create customized applications that appear to be innocent while infecting your computer or sharing your information without your knowledge.

                         

It is obviously FALSE.

• Files can be opened though password protected.

It is TRUE because nowadays, there are many hackers that can access your accounts and files even if you have passwords. hackers uses a program to get into other computers for accessing it. They run the program that cracked the file sharing password.

For example, Facebook is the number 1 social networking site today. Hackers can easily detect and open your accounts. I read an article about it and it teaches you how to hack passwords.It said that there are several methods on how to hack Facebook passwords like Facebook Phishing, Keylogging, Social engineering, and Primary email address hack.If you are interested to know it, just go to this site, http://www.rafayhackingarticles.net/2010/01/4-ways-on-how-to-hack-facebook-password.html. 

COMMON BELIEF AND MYTHS ABOUT COMPUTERS

People are having misconceptions about computers. They have different statement of a certain thing about computers. Some might be possible, some are very impossible. Well, they need to improve and testify that their belief is true. Here are some belief or myth about computers.

Myth 1:  You need to upgrade tour computer if you want it to perform faster.

•  Having a new computer hardware is a very obvious way to speed up your computers. But it's not the only way to speed it up. There are different factors that determined the speed of your computers. Upgrading your memory is still another way to speed it up but it is not the main thing. The things that slow down your computer are the programs that you have on your computer. If you have a lot of files in your PC, then it will take time for your computer to read all of it especially when you are just turning it on. That means, your computer will perform a little bit slower. The tendency of your computer is to load and read all your files.

Myth 2:  Big brands of computers are the best.

•  Famous brands like Dell essentially piece together a computer. They are the ones who pick and choose the pieces to make a computer package. They also choose some software, give a warranty and then sell it to you. Somehow, buying the big brands of computer is an advantage but the downside of it is that there are limited choices. The parts that they chose for a computer package is quite expensive. So, the thing is, you need to maximize your budget and look for much cheaper parts yet a good quality one so that you can spend less on your computer.

Myth 3: The computer is smarter than you are.

• It's obviously not true because computers do not think at all. They are just programmed by us, humans. We can control the computers. Humans made it in the first place so this myth is not true.

Myth 4: You need to be smart to use a computer.

•   This myth is not true because in our present world, even a five-year old child knows how to use a computer. Today's programs are designed to be used by people who have no math skills, no programming skills, either. It doesn't matter who you are and kind of person are you. You can use today's computers and their programs to do things.

History of Computer

Nowadays, computers are very important. We use it in our daily living especially in our modern society. People from all around the world, use it. From families to business, they are really important.

In 2400 BC, abacus was invented in Babylonia. It is the first calculator that lead to the age of computers. You can perform addition and subtraction through the use of abacus.

During the 16th century, several people were able to develop computers. One of them is Blaise Pascal. Blaise Pascal invented the Pascaline. Just a few years after Pascal, Gottfried Wilhelm Leibniz invented a calculator called the stepped reckoner. It can perform addition, subtraction, multiplication, and division. In the 18th century, Frenchman Joseph Marie Jacquard invented a loom that could base its weave upon a pattern automatically read from punched wooden cards, held together in a long row by rope.


By 1822, Charles Babbage, who is known as the Father of Modern computer, developed a steam driven calculating machine which he called the Difference Engine. This machine can compute table of numbers, such as logarithm tables. He asked the government for financial support because numeric tables are important in ocean navigation. Another device that he invented is the Analytical Engine. This machine is as large as a house and has six steam engines. It has two parts: the "Store" and the "Mill". These terms are used in the weaving industry. The Store was where numbers were held and the Mill was where they were "woven" into new results. In a modern computer these same parts are called the memory unit and the Central Processing Unit.

GENERATION OF COMPUTER

• First Generation

In 1946, the first successful electronic computer called ENIAC was invented that lead to the starting point of the current generation of computer. It was developed by J. P. Eckert and J. W. Mauchy. ENIAC stands for Electronic Numeric Integrated And Calculator.

• Second Genration

In this generation, transistors were made instead of vaccum tubes.
Transistors are smaller than vaccum tubes.

• Third Generation

In this generation, Integrated Circuits was the electronic component for computers. It gave birth to microelectronics. It was developed by T. S  Kilby and it has a large storage capacity and faster calculating speed.

• Fourth Generation

This generation of computer is our present generation. What we have in our society belongs to the fourth generation. Microprocessor is the main idea of this generation. It is used for logical and arithmethical functions.