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IBM PC vs. iPhone 4

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The success of the IBM computer led other companies to develop IBM Compatibles, which in turn led to branding like diskettes being advertised as "IBM format". An IBM PC clone could be built with off-the-shelf parts, but the BIOS required some reverse-engineering. Companies like Phoenix Software Associates, American Megatrends, Award, and others achieved workable versions of the BIOS, allowing companies like DELL, Compaq, and HP to manufacture PCs that worked like IBM's product. The IBM PC became the industry standard.

While the iPhone 4 is a touchscreen slate 3G smartphone developed by Apple Inc. It is the fourth generation iPhone, and successor to the iPhone 3GS. It is particularly marketed for video calling (marketed by Apple as FaceTime), consumption of media such as books and periodicals, movies, music, and games, and for general web and e-mail access. It was announced on June 7, 2010, at the WWDC 2010 held at the Moscone Center, San Francisco, and was released on June 24, 2010, in the United States, the United Kingdom, France, Germany and Japan. The iPhone 4 runs Apple's iOS operating system, the same operating system as used on prior iPhones, the iPad, and the iPod Touch. It is mainly controlled by a user's fingertips on the multi-touch display, which is sensitive to fingertip contact.

by davidfostergraphics.Browse more Computer infographics.

Choosing Between Manufacturer And Independent PC Technician Services

When your PC has stopped working, what you will want to do is simply to get it back up and running as soon as possible. But the question is, should you take it to a manufacturer-approved PC technician or to an independent one?

Making the decision regarding which PC technician you will be taking your PC to isn’t always a straightforward one, as not all manufacturer-approved services are better than the independent repairer, and not all independent PC technicians will work out cheaper than going to the manufacturer’s chosen technician.

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One of the most important things that you should be looking at once you have tried the avenues available to fix your PC yourself is to find what qualifications and accreditations that your local technicians will have. The most successful PC technician will always be happy to discuss their qualifications with you, and will often include more details of these on any business cards or websites that their company has.

The most obvious benefit of going to a manufacturer-approved PC technician is that they will have had to go through some form of assessment set by the manufacturer in order to ensure that they are of sufficient standard. In a field where there are so many different qualifications which can be completed, and the standards of the varying qualifications are often difficult to compare, the manufacturer’s assurance on the skills of the technician can be a very helpful.

However, the benefits of going to an independent PC technician are also significant, where as a general rule, you will find that they have prices which will be more competitive than the manufacturer-approved option, and because they will frequently work with a wider variety of machines, and will also build PC’s, they can have a broad base of experience which will help them in repairing your PC.

One thing you should certainly be doing is asking around to see if anyone you know has used any local PC repair services, and what kind of service that they have received with that PC technician.

Ultimately, the choice will usually come down to whether you prefer the extra reassurance of using the manufacturer approved technician or the lower prices that you can get when you use an independent technician.

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Computer 101: Different Function of a Personal Computer.

The most common type of computer nowadays is the PC or Personal Computer. This type of computer can found in almost all places that we do our daily activity like in school, at work, home, and some other commercial area. This computer can do a lot of things for us like typing a report, surfing the internet, playing games or watching movies to name a few. But the real benefits of having the computer wherever you are is doing all those mention above simultaneously. In computer term we call this as MULTITASKING. It simply means doing different function or work at the same time. We can do our report while at the same time we listen to music we download items from the internet. More time can be saving by doing work at same time.

Another aspect of a personal computer is that it can also be programmed to do just one specific task over and over again. An example of this an ATM machine where we get to withdraw our money even if the bank is close or during weekends and holiday. Also we would no longer go directly to the bank teller and give our passbook to withdraw our money. We just need to input a few items, like the PIN number for security purposes, the type of account that we have and the amount that we need to withdraw from our account. Most people think there are some super computers inside those front panels that we used to access our money. But the truth is it is only a PC the same computer that we used in our home. If it where a super computer then it would be truly pensive for bank companies to have almost everywhere even in places where there is no bank branches. Like Malls where a lot of people go everyday. The function of these PC or computer is just to allow people to have access to there account instantly without going to the bank itself.

Another customizes work for the Personal computer is the Cash register of a supermarket. These computers have software in them that allow various prices stored in another computer to be displayed into the cashier computer whenever a product is read via the bar code. It also computes for the individual amount of the same item and computes for the total amount purchase by the costumer and when costumer pays the total amount the cashier enter the amount tendered and the software in the computer computes for the change and will also print a result of the transaction. This process is repeated over and over again for each costumer all day long. This PC functions as a cash register year long.

Nowadays we have the gaming platform like XBOX, PS3 or Nintendo to name a few. But back on the all day’s personal computer were use as gaming PC. Again the specialize software is programmed into the computer and computer is house in an arcade type housing with its own key pad not unlike the keyboard of the personal computer. The people just simple drop a token and select the game and input a few more information and press the start button to begin the game they have chosen to play.

The Personal Computer has really come along way from a multitasking computer to specialize computer that has been programmed to do specific task over and over again. It has spawned all sort of computer types, from the super computer, to mobile computers like the laptop and its cousin to small computer that has evolve to become more sophisticated because of the tons of function it can do.

Computer 101: Computer Network Basic Part 2

On the previous post we explained the function of the client or workstation computer and server computer. To complete our basic computer network a third component is needed and these is where the Hub or Switch come in. The basic look for this two network component is a rectangular size box with lots of square shape holes in the front face.

This square shape holes is called PORT. The function of these ports is to connect the patch cable from your client computer and or the server computer. Normally these ports come in even numbers from 4, 8, 16, or 32 ports per devices. They also have lights per port to indicate proper connection and data collision. If the lights of the port that has a patch cable connected to it is blinking then it means there is flow of data from the ports to the client computer or form the server computer and vice versa.

Basic Network Component

Normally an orange light is use to indicate collision in a network. The function of the Hub or switch is to link the client computer and server computer. They also see to it that a data does not get lost during the transmission from the server to the client that is requesting it. In today’s most demanding LAN a more evolve Switch is being used rather than a simple hub. Switch has more brains packed into its circuit compare to a normal hub. But a hub is less costly than a Switch. If your network is a corporate type then a switch is more suitable to do the job. For a less demanding network like a internet cafe network then a hub is well suited for this job in terms of function and cost.

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Now earlier I mention the word Patch Cable. Now what is that and how does it function in a network. The term Patch cable simply refers to the standard twisted pair cable plus the RJ45 plastic connector. The cable is so called twisted pair because when you open up the inside of the main rubber like cover of the cable you will see five pairs of smaller wire which has a color code twisted by two. So there are five pairs of twisted wire that comprises the main twisted pair cable. Also the RJ45 connector has ten small teeth like metal wherein a crimping tool is needed to force these small teeth like metal to bite those individual pair of cable inside a twisted pair to complete a patch cable.



But I say but you cannot just connect those small cable with the RJ45 connector in any fashions there is a proper way of doing it. This proper way is called standard cabling. In this standard cabling there is a set of color code that we need to follow in order for the patch cable to work. Also you have to make sure that the code is correct and that the wire inside the RJ45 is properly and tightly crimp. Otherwise we risk the network not work properly and wasting the RJ45. Once the twisted is crimp onto the RJ45 there is no way to removed it other than cutting the cable and the RJ45 can no longer be used.

We will not go into the color coding of each cable here.I did a small explanation regarding on how assemble a patch cable so that we would have the basic understanding on how it works in the network. But there are far more concept and information regarding your computer network than compare to what we have talk about in this blog. We haven’t touch on the type of Topologies involve, type of LAN involve whether it is a peer-to-peer network of a client-server network. Another thing is in a common corporate LAN of today, there are more than two server’s involve. To name a few there’s the common File server, the Domain controller which usually comes in two then there’s the Print Server where all the printer resources is located. 

Then there the Exchange Server for all the emails and there the Application server. There is no fixed number of servers that a corporate LAN can have. It can be two or more depending on the needs of the company. The entire server mentioned above has each own function in a network. They several of this to handle specific jobs for the network. It would troublesome if only one computer server is assign to do the entire task mentioned above for a server. Imagine one person doing five or more works simultaneously. So the need for each specific server to do each specific job assign or program to it. More network component as the network goes bigger and wider from LAN to MAN to WAN or the Ultimate WAN the INTERNET.