Difference Between iPhone 4 and iPhone 3Gs

iPhone 4 vs iPhone 3Gs

Witch iteration of the iPhone, we see Apple adding more features and raising the ante against those who aim to dethrone them. With the iPhone 4, Apple finally decided to add video calling, which a lot of people greatly missed in the 3Gs, but only with the use of a WiFi network and not over 3G as it was intended to. This is evidenced by the addition of a secondary camera right beside the speaker. Aside from the addition of a secondary camera, the primary camera of the iPhone4 has also been upgraded to a 5 megapixel sensor from the 3 megapixel sensor that you would find on the 3Gs.
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IT Leadership-Once-great companies drift due to leaders’ styles

Why do so many large organizations lose steam and collapse under their own weight? John M. McKee says it all starts with the boss. Great leaders cause great success, but usually their replacements can’t follow through as successfully. In this article, he uses two of the largest and best-known companies to make his point.

“I wonder if they’re a one-trick pony? I mean, despite spending a huge amount of money on each of their many new product launches, they seem unable to make any significant headway in anything beyond their founding idea.”
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Difference Between RJ45 and RJ48

RJ45 vs RJ48

Most people can easily identify between an RJ11 and an RJ45 wiring, and point out the differences and specific uses of each. But when it comes to an RJ45 and an RJ48, it becomes a little bit more difficult. This is because they usually use the same modular connector and the differences between the two are not easily identifiable. RJ which stands for registered jack does not actually identify the type of connector that is being used. Instead, it identifies the wiring that is being used. These two RJ types therefore differ only in how they are wired.

Both RJ48 and RJ45 use the 8P8C modular plug and 2 pairs of the wires, one pair for transmitting and one pair for receiving data. The RJ45 that we are already very familiar with uses the pins 1,2,3, and 6 for receiving and transmitting data. With RJ48, there are a few configurations that can be used depending on the situation and how they are to be used. One configuration uses the pins 1,2,4, and 5 while another uses 1,2,7, and 8. Other wires are also used for extra shielding while the remaining wires are reserved in case some uses would arise in the future.

RJ45 is used mainly in local area networks where the distances between each network element is relatively short. This is very common in a lot of offices and homes and is the main reason why it has become very popular. RJ48 is used in other applications, the most common one would be in T1 data lines where the wires can extend longer distances and are often exposed to the environment. To protect the integrity of the signal, RJ48 wirings use STP or Shielded Twisted Pair cables. RJ45s use the more common UTP or Unshielded Twisted Pair that have categories 1 to 6, with cat5e being the most predominantly used.

Whether RJ45 or RJ48 is to be used is dictated by the hardware. It is no longer up to the consumer to choose. Just make sure that you wire your connectors properly to what the hardware needs so that you have a working link.

Summary:
1.RJ45 and RJ48 use the same connector
2.RJ45 differs from RJ48 in the way they are wired
3.RJ45 is predominantly used in LAN while RJ48 is more commonly seen on T1 lines
4.RJ45 is connected with UTP cable while RJ48 uses STP


Difference Between Laptop and Notebook computer

Although laptops and notebooks have very similar traits such as they are both portable and you can take them anywhere, there are some differences between both of them.
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Let us start with notebook computers; notebook computers are designed to allow you to do computer work while on the go and still offer all the power mobile users require for entertainment as well as work. This type of computer usually is not cheap and your top of the line notebooks can be very expensive.
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Difference Between Size vs Size on Disk

Size vs Size on Disk

A lot of people have been confused when looking at the properties of a file, folder, or drive as the properties size and size on disk do not usually match each other. The value of size in the properties page indicates the actual size of the file while the size on disk indicates the number of bytes that it actually occupies on the hard drive
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Israel bans imports of Apple iPad

Israel bans imports of Apple iPad
JERUSALEM – Israel has banned imports of Apple Inc.’s hottest new product, the iPad, citing concerns the powerful gadget’s wireless signals could disrupt other devices.
Customs officials said Thursday they have already confiscated about 10 of the lightweight tablet computers since Israel announced the new regulations this week. The ban prevents anyone — even tourists — from bringing iPads into Israel until officials certify that they comply with local transmitter standards.
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