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Samsung Galaxy S4 is 1.7 times faster than Samsung Galaxy S3

Samsung Galaxy S4 is the predecessor of Samsung Galaxy S3. This phone retains the same shape as that of SIII but with many better features that use the hardware more efficiently. This phone exceeds in hardware utilization more than the S3. It comes with the best in class 5 inch AMOLED screen with the corning gorilla glass 3 benchmark.

S4 was released in two versions which differed from each other in terms of hardware equipment. The first one is the normal GSM/3G network supporting with both quad and octa-core and later is LTC advanced network supporting quad and octa core.

Samsung has tagged this phone as their fastest selling phone. 20 million copies of S4 were sold in the following two months since its launch In April, 2013. Some of the new sensing features include, finger sensor which senses the finger when the hover over the screen, eye sensor which integrated multiple eye scrolling and auto pause features. The new smart S4 automatically sets itself to sleep mode as soon as it detects that the eyes of the user has closed. Three internal memory variants are present that is 16gb, 32gb and 64 gb. All of these variants can be supplemented with an additional 64gb memory card. There is a micro usb and charging port at the bottom of the phone.

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A volume control key combination on the right and a sleep mode button the left side of the Samsung Galaxy S4. There is infrared buster and a microphone jack on top of the phone. This infrared buster can be used as a universal remote as programmed by the stock application in the phone. On the back side of the phone there is a 13mp camera accompanied with a flashlight and the bottom there is a loudspeaker.

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Uninterrupted power supplies are installed in offices and places where it is necessary to keep the devices running

Uninterrupted power supplies are installed in offices and places where it is necessary to keep the devices running to avoid the loss of useful information

UPS or uninterrupted power supply is the device which gives up power backup before the start of alternative power source in case the electricity fails. The difference between uninterrupted power supply and the auxillary power supplies is that the uninterrupted power supply keeps the delicate componenets running while the auzillary power source gets stable output.

You cannot use uninterrupted power supply for more than few minutes as it runs on batteries which have a very short back up period. Uninterrupted power supplies are installed in offices and places where it is necessary to keep the devices running to avoid the loss of useful information or where it is not possible to risk any power instability as the equipment very sensitive and expensive. The backup time of an uninterrupted power supply mainly depends on the power of batteries and their size and number as well.

And also the fashin=on in which the batteries are installed effects the outpput as well. The third factor which affects the backup is the load on each uninterrupted power supply. In electricity generation, an electric generator is a device that converts mechanical energy to electrical energy. A generator forces electric current to flow through an external circuit. The resource of mechanical energy might be a reciprocating or turbine steam engine, water falling through a turbine or waterwheel, an internal combustion engine, a wind turbine, a the power for electric power grids.

 Some equipment that is involved in building a basic generator (UPS and Generator) involves a dynamo which is an electrical generator that produces direct current with the use of a commutator. Alternators which produce alternating current with a frequency that is based on the rotational speed of the rotor and the number of magnetic poles. An induction generator or asynchronous generator is a type of AC electrical hand crank, compressed air, or any other source of mechanical energy. Generators provide nearly all of generator that uses the principles of induction motors to produce power.

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PTCL 3G TAB

PTCL 3G TAB by hafeezcenter8
PTCL 3G TAB, a photo by hafeezcenter8 on Flickr.

Via Flickr:
Display:
• 7” IPS screen
• WSVGA LCD 1024X600 HD resolution
• Capacitive touch screen
• Multi-Touch

Memory:
• 512 MB (RAM) & 4GB Flash (ROM)
• Micro Slot up to 32 GB

Cellular & Wireless:
• Support EVDO/CDMA 1X 1900Mhz,

Processor:
Qualcomm MSM8625A 1.2GHz Dual core

Operating System:
• Android 4.0.1 IceCream Sandwich
www.hafeezcentre.pk/Tablets/

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