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Entangled with all those cables?

When the mobile phone, MP3 player, digital camera and other devices have different pin cables, it is time to bring order

When traveling to foreign countries can see how plugging in the dryer or shaver is not a trivial matter, especially if the shape of the plugs do not match. Something similar happens with electronic devices, mainly those that connect to a computer, which force users to carry dozens of cables and adapters. Ten years ago, the back of a personal computer was a huge mess of cables. The parallel cable for the printer and scanner, the serial cable to the modem and the PDA, the cable PS2 mouse and keyboard, the audio cables for the speakers and microphone ... Each with a different plug. Fortunately got the USB cable. A single type of plug that would connect any printers, scanners, digital cameras, external drives. Fast on the data transfer. Furthermore, a power strip (also called 'hub') can connect several devices to one port. No more fights with the cables, right? Nope.

USB, not so universal

One side of the cable was clear: I had to plug into the USB port, which is called USB connector A. But the other side, called B, was available to manufacturers. Thus, the plug that connects to the digital camera is different from the pin on the printer, in turn different from the MP3 player, and so on. This means carrying a different cable for each device. Manufacturers can sell only accessories are compatible with a specific format, a buoyant market comes around. However, there are some USB connectors are standard, and are the ones who should look for when buying a new appliance:

* USB Standard B: is the USB cable that is on the side of the printer, but is also used in other devices such as external hard disks. The disadvantage is the size, too large to small appliances.

* Mini USB for its smaller size, is found in many cameras, external hard drives, PDAs, mobile phones and MP3 players.

The advantage of these standard cables is that enough to carry one to connect all devices with the same jack.
FireWire While USB port quickly appeared called FireWire (or IEEE 1394), which was included as standard on Apple computers. Today, many PCs have this entry, however, the range of devices available in the market is low. The reason is that USB 2.0 can be as fast as FireWire, and is compatible with the previous version of USB, so it has gained in popularity. A plug less to worry about. Private mobile phones If peripherals are struggling to differentiate themselves with the data cable, mobile phones have a different battlefield: the charger. This simple device is a voltage transformer that plugs into the mains on one side, and another to your battery to shit. The plug that connects to the phone is a marvel of variety. While some brands such as Nokia or Sony Ericsson trying to maintain one or at most two different types of plugs, other manufacturers change the type of connector for a phone model to the next. That is, you have to buy back the car charger.

The same is true of the 'earpiece', that set of wired headset and microphone to talk handsfree. Each brand and model is yours. Yet there are standard options in the chaos. One is to use the USB data port itself to recharge the phone, which makes the Blackberry devices, for example. Another option is to stay faithful to one brand to use the same old model charger or chargers used with interchangeable tips, which are used for different phone models. Some even allow you to recharge your phone connected to your computer's USB port, thereby preventing carry the charger.

Wireless power chargers: Future Electricity

The electronic devices of the future will be recharged wirelessly. Entering a room and that all devices have power without having to connect to the mains may be a reality in the medium term. Researchers working on technology that, as happens with mobile phones or wireless Internet connections, it can transport energy without wires. Portable devices like mobile phones, MP3 players and computers that do not require chargers or batteries to operate, as they could recharge at a distance, is a dream that can be realized in a few years. To do this, scientists are working on technologies that open the door to energy management, using theories developed in the nineteenth and early twentieth centuries.

Nikola Tesla, the forgotten wizard of electricity

Tesla is one of the most important inventors in history. He conceived the radio, the electric induction motor, spark plugs, alternator and generator AC power, among other things. However, until a few years their inventions were attributed to other creators who patented his inventions before him. In the last years of his life, Tesla was devoted to trying to transmit energy through the air, without wires and using existing conductivity in the upper layers of the atmosphere. Specifically in the ionosphere. Tesla's idea was to produce energy and send it anywhere in the world. To do this, he built a tower over 60 feet high called Wardenclyffe Tower for his experiments. However, the tower was never completed at all or operate at full capacity due to lack of budget.

Based on the concepts developed by Tesla, a group of researchers from the Massachusetts Institute of Technology (MIT) led by André Marin Soljacic Hurser and have made some experiments to conduct electricity without wireless. One of the first experiments developed has kept a lighted 60-watt bulb to two meters from the nearest outlet. How it works. The transport of electricity is done by creating a magnetic field between two sources that vibrate at the same frequency. The transport of electricity is done by creating a magnetic field between two sources built with copper coils, one connected to a power source and the other to the device. Thus, MRI is achieved by the two sources on the same frequency vibrate and exchange energy between them without affecting other devices or objects nearby.

The method involves inducing electricity through a physical phenomenon known as resonance: All objects have a resonance frequency, and if two objects vibrate at the same frequency, the energy of the vibration increases.
The transfer of power takes place within the space bounded by the coils, but it dissipates outside this space. In addition, other objects located within the space between the coils with a different vibration frequency is not affected by magnetic resonance or the energy released. Soljacic and his group say that the energy dissipation is less than other systems that use radio waves or lasers. According to proponents, the system (for now) only loses 50% of the energy invested. The inventors have named this technology "WiTricity" or "WiTricity" by the union of the English words "wireless" and "electricity".

One of the first experiments has kept a lighted 60-watt bulb to two meters from the nearest clearance outlet. There are still many years to see devices on the market to exploit this technology, but their applications can be applied in many areas, both business, and industrial and household users. However, it still must consider the potential health effects, although in principle there is no evidence of dangerousness. The reason for its low health hazard lies, as opposed to microwave ovens that emit high-frequency power eletromagnéticas in the technology emits low-frequency power, which are not harmful or affect people even though they are located within its range. However, like other technologies that operate on low power, such as mobile phones, many previous studies are needed before final marketing.

Intel wants to rule this new market

Last August, Intel, the world leader in the microprocessor industry, introduced a system for transmitting electricity without wires. To do this, use the same from the MIT-led development, but have achieved a better energy efficiency with 75% efficiency. In other words, you only lose 25% of the energy supplied from the first coil. In addition, Intel is working to improve the resonance at different frequencies and achieve a greater distance between the coils, as currently the most efficient distance is one meter. If Intel manages to make possible commercial development of this technology will be easy for the company to implement in products for laptops and other electronic devices, given its position in the market.

How to connect the mobile cell phone to the computer

The different forms of connection between these two teams can share files of all types. What mobile phone does not allow for taking pictures or video? In addition, many models incorporate sound recorder and they can listen to MP3s. The cell phone has become a 'knife' that accumulates multipurpose audiovisual content in the phone memory, so it's interesting that you can connect with the user's computer for file sharing. This action can be done via Bluetooth, infrared or a memory card adapter SD. Since the PC can be passed to the mobile phone some of the photos or videos taken during the holidays. The potential uses of mobile multiply in combination with the computer. For example, since the PC can be passed to your some of the photos or videos taken during the holidays to show them to friends. Also transfer songs to the phone becomes a music player.

On the other hand, it is the same. Thus, to cite one case, it is possible to send e-mail the pictures or videos that were taken when only had the phone handy. Normally, the connection between phone and PC is via a program that provides the phone manufacturer, and must be installed on the PC. Normally, the connection between phone and computer is done via the software provided by the phone manufacturer. Once this step and connected the phone with your computer, the program is responsible for guiding the user to transfer files and to back up the agenda of the mobile, which can be very useful in case of loss or theft. Moreover, it is also interesting the possibility of driving the train from the computer to change the agenda or to send short messages.

Four ways to connect your phone to your computer

Broadly speaking, there are four ways to pass data from phone to computer or vice versa, although one, the simplest and least likely, is simply to adapt the phone memory card to the SD standard.

* Through Bluetooth: It is the most comfortable and highly recommended because it does not depend on model and make the user terminal, but that can be used with any compatible mobile technology. It is the most convenient and desirable because it does not depend on the make and model of terminal. This form of wireless communication must purchase a Bluetooth adapter, sold in the form of USB, if your computer does not have this connection. For about 10 euros will connect the computer, not only with the phone, but with other peripherals such as PDAs and printers. For this, the phone must be configured and have activated Bluetooth connectivity. So stay in 'visible mode permanently. "
* Through USB cable: This is the most reliable alternative to transmit the data but has the great disadvantage of mobile phone makers have not created any standard physical connection of the terminals, so that the great variety of shots virtually forced to buy a cable for each phone. It has the great disadvantage of mobile phone makers have not created any standard physical connection terminal. This situation is not recommended when one takes into account the low life of the mobile: when charging cycles deplete their batteries, it is cheaper to opt for another terminal to subsidize the operator rather than buy a new battery. In addition, the official cables are expensive, so the best alternative, if you choose this method, is to acquire a cable "compatible", which serves the same function to a much lower price. Can be found on eBay, for example.
* Through Infrared: This is a wireless technology older than Bluetooth, but now less popular. One of its disadvantages is that the phone must be in front of the infrared receiver (would that buy, sell USB format for 15 to 20 euros) each time you want to transfer data to your computer.
* Through a MicroSD card adapter: The fourth alternative stems from the popularity of card readers on computers. Typically, these devices support different types of cards, including Secure Digital (SD).

Its sale, priced between 10 and 30 euros, includes an adapter that adjusts the size of the SD. Mobile terminals typically incorporate a miniaturized version of these cards, called Micro SD. In view of its increasing use has been popularized sale at a price of between 10 and 30 euros, which includes an adapter that adjusts the size of the SD.Por thus makes them compatible with most common card readers on computers. This option allows you to simply pass data between the computer and mobile, without any other options that do provide the other connection methods, such as driving the terminal from the computer, connect to the Internet, etc.

Phones with more memory: Any mobile phone today has some Megabytes of internal memory that can record hundreds of phone numbers with their contact details. This memory can store some files, but is too small if you share videos on the phone or if you want to add a few songs from your computer. For that reason, many manufacturers incorporate the possibility of introducing tiny memory cards such as SD Micro, allowing more space available.

Too many features for regular cellular phones?

To call or send messages all showed similar behavior, the differences are focused on the number and quality of the added functionality. One by one:
NOKIA 6103

202.33 euros.
Free.
The best value for money.
Warranty wrong to give but one year and two accessories. With external antenna. One of the main screens smaller. Most standby time (320 h), but lower in use (12 h). Very complete in functions. The loudest ringer (78 dB) and vibration quieter (31 dB).
Proof of use: 8.2 / 10, the second best rating.

SHARP GX17

91.25 euros, the cheapest. Funded.
Another interesting option.
Another interesting option for those who do not look excessive functions. The lightest and smallest. The main screen larger but low resolution. The smaller capacity internal memory (1.4 MB). Of the lower tones (60.4 db) and the loudest vibrator (42 dB).
Proof of use: 7.4 / 10, the lowest rating. The worst in design, small size keyboard and easy to change the battery and SIM card.

NOKIA 6230i

256.7 euros, the second most expensive. Free.
Warranty wrong to give but one year and two accessories. Which requires less loading time (1h30min). The screen and camera (1.3 megapixels) higher resolution. The only external memory card (up to 512 MB). With radio and MP3 player.
Use Test: 8 out of 10.

MOTOROLA L6

145.67 euros. Free.
The smallest, one of the lightest and also very thin.
The second most autonomy in use.
Of the highest ringer and vibrator louder (45 dB).
Proof of use: 7.6 / 10, of the worst.

SONY ERICSSON Z520i

204 euros. Free.
Warranty wrong to give but one year and two accessories.
The smaller screen.
The only Li-Polymer battery (better). One of the most sonorous tones (77 dB). With MP3 player.
Proof of use: 8.2 / 10, the second best.

SAMSUNG SGH-ZV10

201.33 euros. Funded.
Warranty wrong to give the team only one year and six months to the battery, instead of two years. The one with UMTS (3G), so it is also the only one with video conferencing and it has a faster data transfer. The heavier and larger. External antenna. The greater autonomy in their use. The second best screen resolution and more colors showing. The higher capacity memory (50 Mb). MP3 Player.
Proof of use: 8.5 out of 10, the best for its features and ease of use.

ALCATEL ELLE Glamphone

159 euros. Funded.
The battery the longer it takes to load and offering lower standby time.
No USB or Bluetooth (only infrared).
The fewer functions.
Proof of use: 7.5 out of 10, the worst for his screen-mirror uncomfortable.

MOTOROLA U6

294 euros, the most expensive. Free.
In the heaviest (111.1 g). Larger screens with better resolution and with the greatest number of colors.
The only thing that stands out positively on the quality of communication.
The sound of your vibrator is one of the lowest (32 dB).
Use Test: 8 out of 10.