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21/09/2013

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25/06/2013

Camera lenses are often coated to -

A. Produce laser effect
B. Reduce unwanted reflections
C. Make the beam parallel to the lens axis
D. Produce black box effect

25/06/2013

Which of the following represents an elastic wave ?

A. Radio waves
B. Microwaves
C. Light waves
D. Sound waves

25/06/2013

Formation of beats -

A. Polarisation of waves
B. Interference of waves
C. Refraction of waves
D. Dopplers Effect

25/06/2013

The velocity of sound waves will be least while travelling through -

A. Cork
B. wood
C. glass wool
D. Vacuum

25/06/2013

Smallest wavelength is of -

A. microwaves
B. infrasonics
C. audible frequencies
d. ultrasonics

13/06/2013

Samsung has set foot in Finland, once the sole territory of Nokia Corp, for its new R&D facility. The research and development center is to be executed from this Thursday, 13 June and highlights the Korean corporation’s growth over its Finnish counterpart. The Nordic region in Es poo, Finland is also the location where Nokia is headquartered and now will witness Samsung's operation. The complete details on further investment and staffing means are yet to be revealed by the company.

However, Samsung is not the sole company to set foot in Finland. Other telecom and IT companies like Intel and Huawei have already established their units recently. The large concentration of software developers and engineers is one of the main reasons that these companies have been attracted to the location and many of them have worked with Nokia. Nokia had implemented a huge layoff in the recent years and has sold the glass and steel waterfront office complex to add to its cash reserve. This cutback seems to be an opportune situation in terms of skilled workforce looking for an alternative.

According to market statistics, Samsung is currently leading in the phone category and this was a position previously held by Nokia Corp. With the recent stint of smartphones, Samsung has already shipped more units in the first quarter than the combined number of the rest of four vendors. In India too, Samsung has replaced Nokia as the most popular phone brand and has a major share of 31.4 per cent, higher than Nokia’s 30.1 per cent.

09/06/2013

Introducing: World’s Most Dangerous Virus For Android

The malware which has recently been discovered, takes advantage of hitherto unknown weaknesses in the Android platform, by borrowing advanced functions that are closer to a malicious application plaguing a Windows device, making it the world’s most malicious Trojan for the Android platform.

The malware is named Backdoor, and hasn’t managed to affect the Android ecosystem too badly at present. As opposed to the more benign Android malware, the surreptitious Obad.a utilises Android bugs that weren’t known previously unknown. It can be transmitted through Bluetooth and Wi-Fi connections allowing hackers to issue malicious commands through standard SMS text messages.

"To conclude this review, we would like to add that Backdoor.AndroidOS.Obad.a looks closer to Windows malware than to other Android trojans, in terms of its complexity and the number of unpublished vulnerabilities it exploits. This means that the complexity of Android malware programs is growing rapidly alongside their numbers,” says discoverer, Roman Unuchek, expert at Kaspersky Lab, in a blog post.

Among the more advanced features of the malware are the capability to be remotely controlled by SMS messages. It can be instructed remotely by hackers to connect to new command and control servers, where infected phones upload sensitive user data and receive app updates.

"By exploiting this vulnerability, malicious applications can enjoy extended Device Administrator privileges without appearing on the list of applications which have such privileges," Unuchek said. "As a result of this, it is impossible to delete the malicious program from the smartphone after it gains extended privileges."

According to experts tracking the development, the complicated nature of the malware is an indication of the fact that going forward these malwares are likely to become increasingly complicated, difficult to detect and even more difficult to stop.

09/06/2013

Now, 30 Per Cent More Life To Your Phone’s Battery

We live in a world that is fast changing, especially for those that make and create the hardware that run our modern systems of communication. The consumers are constantly maturing and demanding ‘more’. And possibly one of their foremost demands are batteries that allow smartphones to function in a manner that does not have to have the user keep running in search of a charging point every couple of hours.

Global semiconductor and electronic major, Texas Instruments claims to have made one such discovery, which if correct could catapult it into the leader’s position by far in the global handset component maker race. Texas Instruments had in March announced chips that cut battery charging time by half. Even better, the global giant has prioritized battery circuits again and on Thursday unveiled two new design of chips that are capable of improving not just the charging speed, but also the life-span of single-cell Li-ion batteries.

Texas Instruments, Smartphone chips, Smartphone, Battery life of smartphone, smartphone battery, handset maker, phone, phone battery

The company has christened the new technology as MaxLife. Technology industry experts and analysts tracking the company have given a big thumbs up to the technology, which they suggest can lead to over 30 per cent extension in the average running life of a battery. These fuel gauge circuits, model numbers BQ27530 and BQ27531, are combined with the BQ2416X and BQ2419X charging circuits, which we covered before, to monitor and optimize the battery’s charge rate whilst minimizing battery degradation.

Besides the tech specs, the circuits by Texas Instruments are come with the promise of better thermal management and a reduction in the generation of heat generation when the phone is on charge. The chips will be available in 2.5A and 4.5A versions, and since the development kits are already available, it hopefully won’t be long until we see this technology integrated into some battery efficient gadgets and smartphones.