Sunday, August 14, 2011

Fastest android phones


In the early days of Android, most devices featured the same 528 MHz ARM11 Qualcomm processor and their performance levels were pretty comparable. It was not until Verizon launched the Motorola Droid that we began to see the next generation of chipsets being used, which offered new features like enhanced graphics processors.

Fast forward to today and we now have three major chipsets being used in high-end Android phones. HTC is using the Qualcomm Snapdragon, while Motorola has chosen the Texas Instruments OMAP, and Samsung has designed their own Hummingbird chipset.

All of these processors are based off a similar ARM Cortex-A8 architecture, but each one has been tweaked to offer unique features.

The Qualcomm Snapdragon was the first chipset to bring 1 GHz speeds to Android, but it has the slowest GPU of the three. We have measured this in graphics benchmarks and it has the lowest performance in 3D games (when compared to other 1 GHz chipsets). Qualcomm is hard at work producing a dual-CPU Snapdragon, but no products that use the new chipset have been announced.

Samsung and Texas Instruments have a step up on Qualcomm because they just released their own 1 GHz processors which are based on a 45nm process and utilize faster PowerVR graphics processors from Imagination Technology.

To summarize, the three high-end chipsets being used in Android phones are:

Qualcomm: 1 GHz 65nm Cortex-A8 + Adreno GPU
Texas Instruments: 1 GHz 45nm Cortex-A8 + PowerVR SGX530
Samsung: 1 GHz 45nm Cortex-A8 + PowerVR SGX540
So which Android phones perform the fastest? I wish there was a simple answer, but it depends on a variety of factors including display resolutions, memory, and the version of Android that is installed.

To get a better idea of how the different phones stack up, one turn to Quadrant Professional from Aurora Softworks. A free version of this benchmark was available on the Android Market, but the new versions are only found at alternative app-store SlideME.

The phones that have the software today include:

HTC Magic (CM6 RC1) – 528 MHz Qualcomm MSM7200
Motorola Droid – 550 MHz OMAP3430
HTC EVO – 1 GHz Snapdragon QSD8650
HTC Nexus One (Android 2.2) – 1 GHz Snapdragon QSD8250
Samsung Captivate – 1 GHz Hummingbird S5PC110
Motorola Droid X – 1 GHz OMAP3640
All phones are running unmodified versions of the firmware, except for the HTC Magic which has CyanogenMod 6 installed
cpu test: 

memory test:



i/o tests:
graphics test:
final comparisions/scores:
conclusions:
nexus one is at its top unbeatable, so it is the best android one can buy.

Thursday, August 11, 2011

The most famous ways of attacking computers


-: Privacy Attacks :-


Here attacker uses various automated tools which are freely available on the internet. Some of them are as follows:


1) Trojan :- Trojan is a Remote Administration Tool (RAT) which enable attacker to execute various software and hardware instructions on the target system.


Most trojans consist of two parts -
a) The Server Part :- It has to be installed on the the victim's computer.
b) The Client Part :- It is installed on attacker's system. This part gives attacker complete control over target computer.


Netbus, Girlfriend, sub7, Beast, Back Orifice are some of the popular trojans.


2) Keylogger :- Keyloggers are the tools which enable attacker to record all the keystrokes made by victim and send it's logs secretly to the attacker's e-mail address which is previously set by him.


Almost all the Trojans have keylogging function.


Use of latest updated antirus-firewall, detect the presence of trojan and remove it permanently.


3) Spyware :- Spyware utilities are the malicious programs that spy on the activities of victim, and covertly pass on the recorded information to the attacker without the victim's consent. Most spyware utilities monitor and record the victim's internet-surfing habits. Typically, a spyware tool is built into a host .exe file or utility. If a victim downloads and executes an infected .exe file, then the spyware becomes active on the victim's system.
Spyware tools can be hidden both in .exe files an even ordinary cookie files.
Most spyware tools are created and released on the internet with the aim of collecting useful information about a large number of Internet users for marketing and advertising purposes. On many occasions, attacker also use spyware tools for corporate espionage and spying purposes.


4) Sniffer :- Sniffers were originally developed as a tool for debugging/troubleshooting network problems.
The Ethernet based sniffer works with network interface card (NIC) to capture interprete and save the data packets sent across the network.
Sniffer can turn out to be quite dangerous. If an attacker manages to install a sniffer on your system or the router of your network, then all data including passwords, private messages, company secrets, etc. get captured.


Recommended  Tools
Snort       http://www.snort.org


Ethereal        http://www.ethereal.com






Tuesday, August 2, 2011

4-D film


4-D film (sometimes written as 4D film) is a marketing term that describes an entertainment presentation system combining a 3-D film with physical effects in the theatre, which occur in synchronization with the film (note that 4-D films are not actually 4-dimensional). Because the physical effects can be expensive to install, 4-D films are usually presented only at special venues such as theme parks and amusement parks. However, in Mexico, Nepal, South Korea and India, some movie theatres also have the ability to present a 4-D film and the film Avatar was one of 10 films that have received the treatment, starting with Journey to the Center of the Earth.[1] Some of the effects simulated in 4-D films include rain, wind, strobe lights, and vibration. The use of water sprays and air jets is also common. A 4-D film is not shown in a motion simulator, although some seats in 4-D venues vibrate or may move a few inches during the presentation.
Due to the fast growth of movies, video, and the entertainment industry, 3D Theatres have been enhanced by the addition of special simulations. The combination of 3D movies with chair movement (vibration, sway, tilt, drop, wave motion, or movement in any direction) and other chair effects such as wind blowing, water spraying, leg and back ticklers is usually considered a 4D experience. Using additional hall effects such as smoke, rain, lightning, air bubbles and special smells (for example fireworks smell at the London Eye's Experience and gassy smells when the stinkbug sprays it at It's Tough to be a bug) is often regarded by many as 5D. However, since there is no standard for using these terms, each company uses its own terminology and it is often confusing. It is important to disregard the marketing slogans (4-5-6-7D) used by different companies and check what is exactly offered for both the visual and sensory experience. .
Films and places that showed 4-d films:

  • The Sensorium (1984), at Six Flags Power Plant, Baltimore, MD (the first 4-D film)
  • Captain EO (1986), at Epcot, Disneyland, Disneyland Paris and Tokyo Disneyland
  • Jim Henson's Muppet*Vision 3D (1991), at Disney's Hollywood Studios and Disney's California Adventure
  • Honey, I Shrunk the Audience (1994), at Epcot, Disneyland, Disneyland Paris, Warner Bros. Movie World and Tokyo Disneyland, where it is known as MicroAdventure
  • Terminator 2 3D: Battle Across Time (1996), at Universal Studios Florida, Universal Studios Hollywood and Universal Studios Japan
  • It's Tough To Be A Bug (1998), at Disney's Animal Kingdom and Disney's California Adventure
  • PandaDroom (2002), at the Efteling, Netherlands
  • Mickey's PhilharMagic (2003), at Magic Kingdom and Hong Kong Disneyland and Tokyo Disneyland
  • Pirates 4D (1999), at Busch Gardens Africa, SeaWorld San Antonio, Thorpe Park in the UK, Enchanted Kingdom in the Philippines, Sentosa Singapore and Phantasialand
  • Haunted Lighthouse (2003), (aka R.L. Stine's Haunted Lighthouse 4-D) at Flamingo Land Theme Park and Zoo
  • Shrek 4-D (2003), at Universal Studios Florida, Universal Studios Hollywood, Warner Bros. Movie World, Universal Studios Japan, and Universal Studios Singapore
  • SpongeBob SquarePants 4-D (2002, 2006), at Six Flags over Texas, Moody Gardens, Shedd Aquarium, Adventure Dome, Six Flags Great Adventure, Movie Park Germany, Adventure Aquarium, Kings Dominion, Noah's Ark Waterpark (formerly at Paramount Parks),Pier 39, and Indianapolis Zoo
  • Fly Me to the Moon (2008), at Six Flags over Texas
  • Journey to the Center of the Earth in 4-D (2008), at Stone Mountain Park and Dollywood
  • Pokemon 4-D: Pikachu's Ocean Adventure (2008) at Jordan's in Avon, Massachusetts
  • Avatar in 4-D (2009), in South Korea
  • London Eye 4D Experience (2009), at London Eye
  • Pirates of the Caribbean: On Stranger Tides (2011) Cinépolis 4DX Theater, Mexico City, Guadalajara, Monterrey
  • Kung Fu Panda 2 (2011) Cinépolis 4DX Theater, Mexico City, Guadalajara, Monterrey
  • Transformers: Dark of the Moon (2011) Cinépolis 4DX Theater, Mexico City, Guadalajara, Monterrey, and South Korea
  • Star Tours II (2011) at Disneyland and Disney's Hollywood Studios
  • Shalem, a 3000-year-old guide to Jerusalem's history at the Jerusalem Time Elevator, Jerusalem[2]
  • Spy Kids: All the Time in the World (2011)
source:Wikipedia, the free encyclopedia

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