viernes, 29 de enero de 2010

New IPADE, I want one!


IPad, the tablet from Apple that wants to get into the room


iPad is the name that has finally been given the tablet expected from Apple. Unoriginal the name and its characteristics, because what Apple is proposing with his iPad is the missing link between your phone and laptop.

The iPad is to fill the gap for the ultraportable have wanted to occupy since its launch. But with the touch Apple multi-touch screen and many related services.

iPad, Apple tablet features


If you see photos of the iPad grown an iPod Touch do not panic. It's basically it. Its screen is 9.7 inches, but the feeling in his hand is higher. The technology of LED display is bright and capacitive multitouch technology.

Its resolution is at 1024 × 768 pixels and comes with special coating that is not all the time full of grease and dirt.

The Apple iPad is pretty slim, 13.4 mm, with dimensions of 24.3 × 19 cm. The wireless model is weight at 680 grams and 730 grams 3G.

The processor of Apple iPad is a surprisingly Tegra Nvidia but it is one specific to the mark to 1 Ghz. It also comes with accelerometer and light sensor. WiFi connectivity is N and is also Bluetooth 2.1 + EDR and 3G in some models. It is HSDPA. It also comes with A-GPS and compass.

The only port that has the USB to connect to the computer, so do not think connecting to an external display directly. To reach this accessory. There are also headphone output 3.5 mm and a dock connector. Take integrated speakers and microphone, but it seems that can be used to make calls.

The battery is not removable, and will give us autonomy of 10 hours when playing video or surf via WiFi. We can recharge via USB or with the included power cord.

Reproduction of content seems to be strong in the iPad with support for H.264 video up to 720p. There will be multitasking, something very bad for the iPad, or flash in the browser. For Youtube videos will have to access a specific application that also give us access to the videos in HD this Internet channel.

A device for home entertainment
As proven in the field has the iPad Apple hardware is not impressive. The company talks about a revolutionary device but we only see it like this in the field of applications and services.

The Apple iPad works with the iPhone's operating system but big. Applications that are already in store for younger siblings will be adapted for use in the iPad, but that runs by the developers. The applications we have already bought should work without pay again in the tablet.

Apple has filed various applications and services that has worked with the creators. Have been impressive demonstrations of the online newspaper the Times and iWork for the iPad, which displays intuitive controls, keyboards that fit what we do at all times and of course games, many games. IWork will leave with a $ 10 application.

Integrated into the iPad applications are fairly well achieved as the maps, notes, Safari, email, photos, and so on.

Special mention new iBooks store, where Apple will distribute e-books in EPUB format, which is limited to standard format. Amazon currently can rest assured that the electronic ink is better to read than the LCD iPad, but nevertheless, the user base and power of Apple Store can play in your favor soon.

Posted by Geraldine Avila
WINDOWS VISTA.

Windows Vista is a line of operating systems developed by Microsoft for use on desktop computers, laptops, Tablet PCs and Media Centers.

The development process ended on 8 November 2006 and in the next three months was given to the hardware and software manufacturers, business customers and distribution channels. On 30 January 2007 was released worldwide and was made available to be purchased and downloaded from the Microsoft website.

The advent of Windows Vista comes more than 5 years after the introduction of its predecessor, Windows XP, is the longest time between two consecutive versions of Microsoft Windows. The campaign launch was even more expensive than Windows 95, occurred on 25 August 1995, because it also includes other products like Microsoft Office 2007 and Exchange Server 2007. [Citation needed] Currently Windows Vista already has a successor Called Windows 7.

Windows Vista Features

Some of the improvements are widely advertised:

Windows Aero: The new graphical user interface included in Windows Vista that replaces the graphical interface used in Windows XP Luna. It offers a graphical interface more pleasant and relaxing to the user's view. Incorporates features like the translucency of the windows, which lets you see what is behind them. Also new are the improvements in navigation between the windows which is facilitated due to new features such as Flip 3D, and the effect of slow motion.

Internet Explorer 7: Windows Vista has built-in (you can also download a version for Windows XP SP2) which incorporates various enhancements such as tabbed browsing and the Quick Tabs view that samples thumbnails of open pages. It also includes some security enhancements such as anti-phishing warnings and protected mode (only in Vista) that prevents code running websites without permission. Internet Explorer 8 is the successor of this release and is now available for download in Spanish from the Microsoft website.

Windows Sidebar (Windows Sidebar) is a new tool which is located on the right side of the screen and in which or Gadgets are small programs which allow access to small tools without opening a window. Some show the time, weather or allow you to search information on Google or Wikipedia, to name a few. Gadgets Vista includes some pre-installed, but you can also download them from the Internet that are not provided only by Microsoft but by other companies or individuals.

Windows Media Player 11: This new version meant a major change over past versions, brings a new interface and new organization of the library.

Windows Vista is the first Microsoft operating system designed to ensure full compatibility with EFI (Extensible Firmware Interface), the technology to replace the archaic BIOS for over two decades have formed an inseparable part of personal computers, so therefore not use MBR (Master Boot Record), but GPT (GUID Partition Table)
Windows drawn in XAML and vector graphics using DirectX. For this, use a new API called Windows Presentation Foundation, code-named Avalon, which requires a 3D accelerated graphics card compatible with DirectX.
WinFX, an API designed to replace the current API called Win32. This, along with Avalon and Indigo are the pillars of Windows Vista.

Native ability to burn DVDs.
A command line interface called Windows PowerShell, which eventually was offered as a separate download for Windows Vista and Windows XP SP2.

It announced a further expansion of the database file system called WinFS. The development of such a file system has been abandoned by Microsoft, therefore not be included in Windows Vista, for the time being offset by a search system based on indexing.

The system integrates directly with a newsreader RSS (Really Simple Syndication, by its initials in English).

The System Restore utility has been updated and implemented as logon tool, facilitating the "rescue" the system.

A unified communications system called Windows Comunication Foundation, code-named Indigo.

A system called Windows Defender antispyware.

Add to capacity system firewall to block connections that leave the system without permission.

Windows Mail is an email client, replacing Outlook Express.

It includes Windows ReadyBoost which is a disk caching technology first included in the Windows Vista operating system. It aims to make computers faster than those running under the above operating system by using USB flash drives, SD cards, CompactFlash or similar.

It has embedded the BitLocker Drive Encryption to protect data lost in the Enterprise and Ultimate.

User Account Control (User Account Control): unlike previous versions of Windows for new users of Windows Vista does not have administrator rights by default. To perform administrative tasks a confirmation window appears.

Includes a "Sync Center for Windows Vista synchronization with Pocket PC without installing the" Active Sync ".
Windows Dreamscene, single version, Windows Vista Ultimate, is a dynamic desktop wallpaper based on a video. Update is downloaded by the OS itself.

It incorporates a protection system called Windows Software Protection Platform (WSPP) that is more powerful than the current Windows Genuine Advantage (WGA). When it detects illegal copying is the first thing he will do is alert the user and the user is unable to obtain a true copy of the program will start to go disabling system options, such as the Aero or Windows Defender to leave only the most active basic as the navegador.2

Their inclusion in various editions of the media center (Media Center) which can be used by remote control and controls for the video game console Xbox 360 and graphical interfaces which are created through language MCML format. Through the media center users can access content from their computers via your TV screen and control audio and video of it through a remote control type used to control televisions, VCRs and other appliances of this type.Although there were special editions of Windows XP that included the media center, with Windows Vista this has been modified from its bases and is now included in some of the normal operating system issues, rather than be required a special edition for power system use it as happened with the previous version of Windows.

15% load applications faster than Windows XP because of SuperFetch feature.

Sign on standby in 2 seconds.

Is reduced by 50% the amount of times to restart the system after the updates.

Editions

Main article: Windows Vista Editions
On 26 February 2006, the company Microsoft announced that the next version of Windows would include 6 new ediciones.3 All versions are available architectures (processors) in 32 and 64 bits, with the exception of Microsoft Windows Vista Starter Edition, which only will be available in 32 bits, since it is a minor editing features.
Microsoft Windows Vista Starter Edition. It's a limited edition of only a few countries and has many of the features of Windows Vista.
Microsoft Windows Vista Home Basic. It includes many features of Windows Vista that we do see in all the above.
Microsoft Windows Vista Home Premium. It is designed for households by including applications like Media Center.
Microsoft Windows Vista Business. It is for companies, instead of Media Center has various uses.
Microsoft Windows Vista Enterprise. Only available for large enterprises. It is similar to business with some added features.
Microsoft Windows Vista Ultimate. There is more than the sum of the two previous editions (Home Premium + Vista Enterprise), ie, the most complete of all
With all these versions, the topic is really simplified. What to choose? One that meets our needs. The basic versions can be upgraded to superior using a system called Windows Anytime Upgrade that by sending our product key to Microsoft, we unlock certain features in addition to giving us a new key, and we can enjoy a higher version of Windows Vista.

This is possible since whatever version you buy, the DVD of all editions of Windows Vista is exactly the same. They are installed as one or the other characteristics associated serial number.

Updates

Service Pack 1

The Service Pack 1 (SP1) was a general update to Windows Vista received on 4 February 2008, and deals with the problems faced in the initial version. SP1 contains changes focused on addressing specific issues of performance, reliability and security, support for new types of hardware, better memory management, address the problem with energy in batteries for laptops, in addition to adding support for several emerging standards hardware and software, including support for highlighting the exFAT file system, 802.11n wireless networking, IPv6 VPN connections, and the protocol SSTP (Secure Socket Tuneling). The SP1 kernel (6001) is consistent with the release version of Windows Server 2008.

Two areas that have seen major changes in SP1 are due to opinions of developers and software vendors. One of these is desktop search, users can change the default search program provided by any third party instead of Windows desktop search that includes Windows Vista, in addition to the search programs may be fully coupled with the services provided by operating system.These changes are partly due to complaints the company Google, whose Google Desktop Search application was overshadowed by the native search system in Vista.
An update to DirectX 10, named DirectX 10.1, makes mandatory several features previously optional in Direct3D 10 hardware devices.

The active support for SP1 patches 'hot' technology designed to optimize the loading time and decrease the restarts. Its operation allows Windows components to be updated (or "patched") while being used by a running process. Updated packages 'hot' are installed using the same methods as traditional update packages, and do not require a reboot.

Service Pack 2
This update is already in its final version in German, Spanish (Traditional), French, English and Japanese, and over a few weeks will be translated into other languages in which one sells the operating system.
Some features that are added are:
-Windows Search 4.0.
-Support for Bluetooth 2.1.
-You can record on Blu-ray without any additional software.
-Integra Windows Connect Now to simplify Wi-Fi connections.
-Improved file support exFAT supporting UTC timestamps.
-Improvement up to 10% energy efficiency in portable computers.
-Reduces the time that the system needs to retrieve the Wi-Fi when it comes out of hibernation.
-Increases the TCP connection limit available.
-Reduction of resource use Gadgets.
-Inclusion of Hyper-V.
-System Updates without restarting the OS.

Luisa del C. Nuñez Hernandez
C.I:21.146.188

viernes, 22 de enero de 2010

Computer network

A network of computers, also called network computer or computer network, is a set of equipment (hardware and / or devices) connected by wires, signals, waves or any other method of transporting data, they share information (files) , resources (CD-ROM, printers, etc..), services (Internet access, e-mail, chat, games, etc.).

A communications network is a set of technical means of distance communication between autonomous teams (non-hierarchical -master/slave-). This is usually transmit data, audio and video by electromagnetic waves through different media (air, vacuum, copper cable, fiber optics, etc.).

Classification of networks

In scope:
Personal Area Network (PAN)
Local Area Network (LAN)
Campus Area Network (CAN)
Metropolitan Area Network (MAN)
Wide Area Network (WAN)
Simple Area Network (SPL)
Storage Area Network (SAN)
For the connection method:
Guided media: coaxial cable, twisted pair, fiber optic and other cables.
Unguided media: radio, infrared, microwave, laser and other wireless networks.
For functional relationship:
Client-server
Peer-to-peer (P2P)
Network Architectures
For network topology:
Bus network
Star network
Ring network (or double ring)
Mesh network (or fully connected)
Red Tree
Red Mixed (any combination of the above)
On the directionality of the data (transmission rate)
Simplex (unidirectional): Data terminal equipment transmits and another receives. (eg. streaming)
Half-duplex (bidirectional): only one computer transmits at a time. Also called Semi-Duplex (eg. Communication by radio, if teams are not full duplex, you could not transmit (speak) if the other person is also transmitting (talking) because his team would be receiving (listening ) at the time).
Full-duplex (bidirectional): both can transmit and receive the same information simultaneously.(eg. videoconferencing).
.
Network types .

Public: a public network is defined as a network that anyone can use and not the networks that are configured with personal password. It is a network of interconnected computers capable of sharing information and allows users to communicate regardless of geographical location.

Private Network: A private network would be defined as a network that can use only some people and they are set to personal password.

Personal Area Network (PAN): (Personal Area Network) is a computer network used for communication among computer devices (phones, including personal digital assistants) close to a person. The devices may or may not belong to the person in question. The scope of a PAN is typically a few meters. PANs can be used for communication between personal devices themselves (intrapersonal communication) or to connect to a high level network and the Internet (an uplink). Personal area networks can be connected to cables with computer buses such as USB and FireWire. A network wireless personal area (WPAN) can also be made possible with network technologies such as IrDA and Bluetooth.

Local Area Network (LAN): a network that is limited to a relatively small spatial area such as a room, a single building, a ship or an airplane. Local area networks are sometimes called single-location network. Note: For administrative purposes, large LANs are often divided into smaller logical segments called Workgroups. A Workgroups is a group of computers that share a common set of resources within a LAN.

Virtual Local Area Network (VLAN): A Virtual LAN or VLAN commonly called, is a group of computers, with a common set of shared resources and requirements that communicate as if attached to a logical division of networks computers in which all nodes can reach out to others through broadcast (broadcast domain) in the data link layer, despite their different physical location. This can be logically grouped computers to the network location is no longer so closely associated with and restricted to the physical location of each computer, as with a LAN, also providing security, flexibility and resource savings. To achieve this, it has been established as the IEEE 802.1Q standard designed to address the problem of how to separate physically very large networks into smaller pieces and provide a high level of security between segments of internal networks have the freedom to manage without of their physical location

Campus Area Network (CAN): The drift to a network that connects two or more LANs which should be connected in a specific geographic area such as a university campus, an industrial park or military base.

Metropolitan Area Network (MAN): A network that connects the networks of two or more local area together but does not extend beyond the immediate city limits, or metropolitan area.Routers (routers) multiple switches (switch) and the hubs are connected to create a MAN.

Wide Area Network (WAN) is a data communications network covering a relatively broad geographic area and often uses transmission facilities provided by common carriers such as telephone companies. WAN technologies generally function at the lower three layers of the OSI reference model: the physical layer, the data link layer and network layer.

Storage Area Network (SAN): A network designed to connect servers, arrays (arrays) disks and supporting libraries. It is mainly based on technology of fiber or iSCSI. Its function is to connect in a fast, secure and reliable storage of the different elements that constitute it.

Irregular network: A system of wires and buses that connect through a modem, and resulting in the connection of one or more computers. This network is similar to mixed with one that does not follow the parameters set out in it. Many of these cases are widely used in most networks.

Bachiller : Luisa Nuñez C.I: 21.146.188