18.3.13

Connect 2 PC Wireless Network

In this guide I will try to explain how to connect 2 laptops together, without using crossed wires and without having a wireless router, to transfer files from one handset to another and to share the internet connection of one of the two for you can navigate on the internet.

The typical situation can be this.
I have a laptop connected directly to the Internet using an ADSL modem with Wireless network adapter for wireless connections.

My brother bought a new laptop and want to use the Internet too.
The ideal solution is to spend money and buy a wireless broadband router, use one pc as a router.

If you have a desktop computer that has no fixed wireless adapter, you can buy a USB wireless adapter for less than 10 euros and is much cheaper than a router.

Here's how to share your Internet connection from laptop or desktop computer that has a wireless adapter and create a real network of PCs that can surf the internet together.

In another article we saw how to connect two PCs with wifi without internet connection only for exchanging files.

With Windows Vista and Windows 7 is really simple to connect 2 or more computers together using the wireless network.

So, if you need to connect a Windows pc XP and one Vista, it surely configure Vista as server computer that is connected to a network that shares its connection, while XP is the client that connects to the network through the Vista pc.

If you want to connect multiple PCs together who share the same connection and files, one that has Vista can act as a Host while everyone else become clients that use the shared connection.

HOST means that the computer is directly connected to the Internet via ADSL modem and the network that must be shared.

To configure the computer with the Windows Vista operating system that will act as a wireless access point, you can follow the following steps:

1) press the right mouse button on the small icon indicating the 2 small computers, bottom right on your desktop, and select the last entry, the network and sharing Center.

2) on the right side click on set up a connection or network.

3) Choose "set a wireless ad hoc (computer-to-computer) network" and click Next.

4) a window appears that says something like: "an ad hoc network (computer-to-computer network) is a temporary network used for sharing files, presentations, or an Internet connection among multiple computers and devices. Computers and devices in ad hoc networks must be within 30 feet of each other. If the pc is connected to a wireless network, you may be disconnected when you set up this kind of network. "
Click on next.

5) now Enter any name, select the security type and enter a password. (For example I write pom-network name, WEP as security protocol and password 12345) and reclick on it next.
At this point you can decide whether to save the configuration for it reusable afterwards or not; If you do not save, to reboot you will have to reconfigure it again.

6) once you have finished configuring, Vista will tell you that the network is ready for use and, in the lower part of the window, you can enable internet connection sharing.

At this point ended the phase of setting up the server, i.e., of the pc that is sharing the connection will allow others to go on the internet doing from through.

As you can see, the wizard is very easy, now then, let's see how to connect another laptop with Windows XP or Vista.

From any pc with a wireless network card, making scanning of available networks, you should see the ad-hoc connection you created earlier.

Next, select the network you created earlier (the pom-network) and click Connect.
If the network to which you are attempting to access is an unsecured network, simply select "connect anyway" otherwise you enter password (12345) and you click on "connect"

You should then see a message that notifies the connection successfully.

At this point, you can begin to surf the Internet and access the shared files on other computers connected to the ad-hoc network always remembering that the Host computer must be approximately 9 metres from the pc that is sharing the connection otherwise it falls all over!

If the host server must be a Windows XP pc the procedure is described in article Share the Adsl wireless home Internet on pc and mobile phones with Wifi.

If it is Windows 7, you can create a hotspot with your computer with a really simple method which does not require ad hoc connection.

26.11.12

Buying Guide Graphics Card

1. Identify your needs:

The options are endless in the market, and with the increased development of technologies for video cards, but no one else knows your needs than yourself. Not the same choose a graphics card for a graphic designer for a graphic design student, for a video player or for basic office use. In fact the best question to ask ourselves is the answer for what use I will give the video card?. Believe me, if you answer this question will be on track to make a good decision. Simple and clear, sometimes we fall into the mistake of thinking I needed the latest generation of the ultimate card even when playing on the computer was lonely and did not know how to use Photoshop.

2. Overhaul the budget you are willing to invest in your video card:


Set the money you invest is a key point, since it limits the search options and you avoid looking 35 options even if your budget only allows you to access 5. Sometimes it is better to wait a bit and save for a card that will allow us to meet our needs.

3. The memory card is not the most important:

This is a point on which we agree that once the have advised well when buying a video card. The most common mistake is to think that just by having 512MB or 1GB of RAM, and is a high-performance card is not. In recent days we have heard that more people know the term GPU (Graphics Processor Unit) or graphics processing unit and the graphics card is that it behaves like a small computer as the processor (CPU) is key the PC, the GPU is key to the performance of the video card. Turn the GPU handles multiple units of measure as is the frequency (always shown on the manufacturer's data sheet), Stream Processors (the more stream processors have more powerful the GPU for a type of architecture), units texture or texels, and raster operation units. Normally the card sheet find the first two but the following values ​​are found on the Internet.

4. Check that your motherboard has the right slot:

A common mistake that people ask often extraordinary cards, they want to connect on older machines, the problem is that once existed AGP port and does not support PCI Express 16x, in this case it is always recommended to update the Board and the processor, is a major investment in the medium term but will save money and performance.

5. The memory capacity not only depends on the size:


Size: The larger the size the higher the performance. The effect occurs in the same way as does the PC RAM.

Type: There are three types available in RAM: GDDR2, GDDR3 and GDDR5. The better the higher the performance benchmark. At this point people get confused because they think that the GDDR must equal the DDR memory. The fact is that there is no compatibility problem, you do not need to connect a RAM DDR3 video card with DDR3 or DDR5 Technology. Back and reiterated the important thing is that you possess Motherboard PCI Express 16x port.

Frequency: Finally and just as with the PC RAM between frequently have better performance.

6. Read about the current situation of the manufacturers:

This is a cyclical point, since there are two houses manufacturers that have 100% market share of Cards. If it is correct we mean ATI (recently purchased by AMD) and NVIDIA. And is that measuring these two titans of the industry is as difficult as choosing between a Lamborghini and a Ferrari. Both develop unique technologies and consistently outperform both. Therefore it is best to listen to experts and make conclusions, particularly not choose any brand because both have been tested and have proved very efficient, but there are times when a brand is leading the other.

7. Make sure the model you saw and that these trades is the same:

Often salespeople who prey on this point and will sell the customer a reference in normal terms is the same reference as the quoted, and often do not even realize that he was given a reduced performance. And is that the manufacturers make multiple versions of the same card with different characteristics, for example: Sapphire Vapor X Ultimate, Hawk MSI Cyclone OC should be aware that the box matches the card you saw online or in store, and a 5670 and 5670 have the same reference Ultimate 5670, but very different technologies.

8. Check out which ports have:

Periodically have changed the Video Output ports (VGA, DVI, HDMI and mini HDMI port) the important thing is that you define the connection (HDMI particularly because it's video and audio, and the quality is far superior) but if you have a monitor with VGA output so unless your card has VGA or DVI with a converter you can use it without problems.

9. Think ahead:

When you say you think the future is because they know many customers rushing to buy a card for your budget but what happens is that after two months to buy a higher return. Theoretically it for you, but in this market after several years of experience and is considered a best advice, is what the customer appreciates more and especially when changing as fast as technology.


10. Do not abuse the information:

With the development of social media marketing and Web 2.0 billion internet sources, we tend to read 10,000 views and not bad, but too much can confuse rather than clarify your doubts, so record your benchmarks and making the best decision.

24.6.12

Building Cheap Computers

If the reason for doing so is the budget, it is preferable to buy a cheaper, but newly assembled system.

As with any other digital or electronic device that is purchased, the most important part of a PC is invisible and is called "warranty and technical support". Whether brand or not, make sure that there is a robust response from the other side of the telephone line, in the event of a component failure or that the team does not play as expected.

'Key' elements. To avoid mistakes when buying a PC economic, must be pay attention only to these four components: processor, hard disk, RAM memory and the graphics card for games. Although all of them are very important, today only one is decisive: the RAM.

The processor is equivalent to the engine of the car and unless go you to give certain very specific uses, very demanding and definitely little common, any new processor is fine for the majority of PC users.

The hard disk is the component where the documents and programs are stored permanently. This is equivalent to a library or a Cabinet. Disks are cheap, and today offer a lot of space.

You are to use the machine for video games of last generation, should invest in a 3D graphics card. What is this? It is an electronic brain specializes in generating very realistic images at high speed. The RAM is the least complicated parts that make up a computer, technically, are circuits where all it processes are carried out.

31.5.12

Hard Drive Self Destruct Button

This hard drive will self destruct A self-destruct button the entire disk: Data in smoke in an instant Concerned about the privacy of your data on your hard disk? Well, maybe there is a radical solution to the problem and that is the complete destruction of the device on which information is stored. And in case of extreme necessity need not remove the hard disk and throw it out the window of the thirteenth floor. In this case there is even a slightest chance to still have access to content stored on the device. And then what? The solution could be the Invincible SSD.Undo edits

This solid state drive is manufactured by Chinese RunCore, a company specializing in the production of SSDs. And, like most of the SSD, the Invincible also offers features such as very low temperatures, fuel consumption, operating temperatures between -45 and 95 degrees Celsius, read speeds that reach 240 MB / s writing that reach 140 MB / s. Its peculiarity, however, lies elsewhere, to be exact, in the presence of two buttons that remain outside the PC case and it is to eliminate at a stroke all the data stored on the device.

Specifically, there is a green button and a red. Pressing the green button, the device performs a cancellation "intelligent", overwriting all data with random data and meaningless, thus preventing the recovery of previously stored data. Pressing the red button, instead, passes to the destruction of flash memory, through the application of an overcurrent that burns the memories, preventing access to data. During the process of destruction, the current is such as to cause a release of smoke from the storage device. One way certainly extreme, but that ultimately guarantees the confidentiality of data, preventing recovery. Obviously, the inability to recover the data is not always good and goes well with the obligation to throw off the device because it does not work anymore. Furthermore, this model is not so invincible Invincible: What would happen if someone pressed the wrong button by mistake or out of spite? Months and months of job losses with the integrity of the drive. For those not afraid to take this risk and is fanatical about privacy, then this is the right SSD device, even though we do not know when it will be available on the market and how much it will cost.

11.5.12

NVIDIA's GeForce Experience to optimize games for PC

The system sends the information to a data center where there are supercomputers that have a single purpose, to continually develop perfect game settings for each combination of GPU, CPU, motherboard drivers and configuration.

According to Jen-Hsun Huang, CEO and president of Nvidia, PC gaming requires more than knowledge of the system console for gamers and therefore is more difficult to extricate from the settings and find the ideal configuration for the type of hardware that you own.

Nvidia has devised a cloud, called the GeForce Experience, which will allow PC gamers to enjoy the best balance between performance and visual quality, and in each game according to your configuration. Gone are the days of having to change any setting of detail?

Experience is the GeForce Nvidia's new cloud technology that evaluates the hardware of your computer and then changes the settings of your games so you can enjoy the best experience.

The system sends the information to a data center where there are supercomputers that have a single purpose, to continually develop perfect game settings for each combination of GPU, CPU, motherboard drivers and configuration.
According to Jen-Hsun Huang, CEO and president of Nvidia, PC gaming requires more than knowledge of the system console for gamers and therefore is more difficult to extricate from the settings and find the ideal configuration for the type of hardware that you own.

According to statistics from Nvidia, 80% of gamers do not change the quality settings and therefore plays an even worse graphics than the console. GeForce Experience wants to put an end to all this and bring out the PC as the platform visually more satisfying to play, and meanwhile make the process of proof "inexperienced" automating everything.

For the expert this system may not be necessary, but there's always more people who play well sporadically, maybe on ultrabook, netbook or low-end PC, and often do not invest the time (perhaps for lack of jurisdiction) to test different configurations of detail to find the best compromise between graphics and performance.

GeForce Experience will be downloadable in Beta from June 6th and then we'll see if the Nvidia system will be so accurate and effective to solve the problems we all face every time a new game comes out and does not work optimally with full details.

Problems a bit 'we like, do not deny it, because at least we think there is much poetry in the afternoon to pass a test of driver settings and change drivers. Maybe we're too geeky!

Microsoft Research’s SoundWave, Doppler Effect for computer gesture control

Soundwave is a model input based on the detection of the movement of the hands through the sound and ultrasound. At no cost, because it uses components already installed in the PC and requires no dedicated hardware. Many possible applications and the system, although experimental, is already very precise

The DOPPLER EFFECT is well exemplified by the sound you can hear when passing a car very fast. The movement of the vehicle to perceive a change of the sound wave emitted by the engine, which in reality is always the same. And the Doppler effect is the basis of Soundwave, a Microsoft project that starts from the sound to reach the gestures with which to control an electronic device. Without the use then of a motion sensor and position such as that of Kinect, the device for Xbox which allows to interact with the game by moving the body. After that Disney thinks of a world of touch 1, Microsoft works for subtraction and replaces the gestural touch.

In Redmond have thought of using the Doppler effect as the source of information, then to understand how the computer interprets the user's hands move in front of the PC. Soundwave works by measuring what they perceive from the computer's microphone and what comes out of the speaker, after a calibration of audio and hands with the issuance of an ultrasound between 20 and 22 kHz. An effect similar to what it would be playing a theremin, a musical instrument based on electrical fields. In fact, a kind of "tuning" of the hands, which allows the system to accurately detect their behavior, through the comparison of data coming from the input and output.

Soundwave becomes able to understand how the user is moving his hands in front of the screen. There are many parameters detectable and therefore particularly complex interfaces that they could get. Measuring and mixing data on the speed, direction and spatial coverage of the motion of the hands, Soundwave returns behavior of the screen, which in the first test was easy to understand and fairly accurate, with an accuracy of 90%. Possible applications are numerous features to the already limited time, the control without external devices of a computer complex interactivity.

The real point for Soundwave to Kinect is that nature does not need to run more than simple microphones and speakers. All components at low cost, and in any case available in the computer also not more recent. Kinect is instead based on technologies that make it a dedicated input device sophisticated but costing considerably higher. And do not affect the functionality of the speakers, which must naturally remain active so Soundwave can work. At least until Microsoft developed a technology of cancellation of ambient sound.

Asus Ivy Bridge Desktop

ASUS presents a series of desktop PCs featuring the 3rd generation Intel Core processor, you switch from ROG gaming systems until you get to more conventional PC, via the now ubiquitous all- in-one desktop computer that is integrated into the same enclosure monitor all hardware components.

With its impressive design inspired by the aggressive lines, the new ASUS ROG CG8580 Tytan is based on Intel Core i7-3770K overclocked to 4.6 GHz, guarantees exceptional game performance and is equipped with a Turbo button for overclocking instant Gear , which does not require a restart or change the BIOS settings. The graphic is assigned to an Nvidia GeForce GTX 680 2 GB of GDDR5 VRAM, while the storage is headed by a double-configured 128 GB SSD in RAID 0. Finally, it presents a sound card ASUS Xonar DX supports 7.1 audio.

The two all-in-one are the ET2411 and ET2701. The first screen has a 23.6 "LED backlit, Full HD resolution and, among other things, has a video card GeForce GT630M (mobile component due to the small size of the system) and a reader / writer BluRay, could be so used as a multimedia device to 360 degrees.

The ET2701, however, is much more interesting from a hardware point of view. Indeed, a panel has a 27 "with IPS (In Plane Switching), which provides viewing angles both horizontally and vertically equal to 178 °. Graphics chip used here is top class, finding it an Nvidia GeForce GT640M.

Finally, the two CG8520 and CG6870 desktop systems are powerful and well balanced and have all the latest technologies available on the market. Both have a BluRay player, 7.1 channel sound card and USB 3.0 ports, of up to six on the model CG8520. Storage, in both cases, is assigned to more traditional hard drive running at 7200 revolutions / minute, which they provide a good mix of performance and reliability.