PEN DRIVER

WORKING OF PEN DRIVER

USB pen driver are NAND type flash memory data storage devices integrated with a USB (universal serial bus ) interface to access the data stored in a flash drive , the driver must be connected to a computer ,either by plugging it into a USB host controller built into the computer or into USB hub , flash driver(OR)pen driver are ac hive only when plugged into a USB connection and draw all necessary power from the supply provided by that connection.

1.male type-A USB connection.provides an interface to the host computer.

2. USB mass stage controller-implements the USB host controller and provides a linear interface to block oriented serial flash devices while hiding the complexities of block- orientation, block erasure, and wear leveling ,or wear balancing,the controller contains a small amount of on chip ROM and RAM.

3.flash memory chip - stores data .NAND flash is typically also used in DIGITAL CAMERA.

4.crystal oscillator-produces the device's main 12MHZ CLOCK SIGNAL

USING OF USB FLASH DRIVE:-

1.insert flash driver into the USB port of computer

2.wait for the hardware to automatically install to computer.

AFTER INSTALL THE PEN DRIVER .READE TO USING

DTH(direct to home)

DTH

DTH or direct to home system are aimed at transmitting digital TV signal in KU BAND through satellite for reception directly by the users or subscribers .At the subscriber premises a small dish antenna receivers the transmitted ku band signal and feeds a SET UP BOX ,which decoded and converts them into proper TV signal suitable to view the programs on a normal television set
Off set dishes are commonly foundd in DTH system. the surface of an offset fed dish is a section of a larger prime-focus parabola. The feed assemble , which is still located at the focus of the larger "PARENT"dish , appears to be offset from that portion of the reflective surface in use since the feed/LNB structure is offset,it does not block incoming signal. A typical kuband antenna with set to box fir use with DTH system
ADVANTAGES:-
1.excellent reception even in the remote areas
2.reception of hundreds of channels transmitted through out the world.
3..No need of physical connection to the network through co-axial cables
4.No interference from adjacent or other system
5.easy installation