techniaonline

SPY CAMERAS   Hidden cameras,spy cameras ...etc are used for same item.Mainly these items are used for security.In a office ,factory,road,lab.not only also we can see these items in the domestic.In the past we have seen these gadgets in the movies.But today it comes true. All of us can use these items.These are not most expensive product and easy to operate and also enjoyable. * Why we use these spy cameras in somewhere????                       The answer is for above question is to watch someones behavior...     My second question is,  * why we wanted to watch their actions?????                 The answer is simple we have some relationship with them as bad or good.They can be our worker.we must watch whether he is working or not. Some time they may be our Family member  and can be our girl friend or boy friend.Just imagi...

    MARKETING  Marketing is the business function that identifies unfulfilled needs.It based on main four pieces.   Marketing is the science of choosing target markets through market analysis and market segmentation, as well as understanding consumer buying behavor and providing superior customer value.There are five competing concepts, under which oraganization can choose to operate their business, *         Production Concept *         Selling Concept *         Marketing Concept      *         Holistic Concept When we choose a market for a product, we want to build a brand name to promote the products. In the ancient period people exchange their goods or products with Barter system. Corporate Identity is the main thing of brand building.For more details www.diamondlinks.n...

Port is a data travelling end in the computer with external devices like printers, scanners, cameras ,moderms etc...These ports are digitalized.There are two basic ports in the computer. These are serial ports and parallel   ports.We can send number of signals at once through a parallel port according to its pin configuration.But in the serial port can send only one signal at once.                        In here we have considered about parallel port for control electronic circuits.The parallel port we considered is in the back side of the computer.Some time it is called printer port.Because earlier most of printers has used that port.

*elecreical machines can be devided into:  - generetors- which convert mechanical energy into electrical energy  -motors- which convert electrical energy into mechanical energy. *Both types operates through the interaction between a magnetic field and a set of windings

          The method of electricity generation plays an important role in determining the cost of generation ,for an example          The power plant which use fuel oi are more expensive in terms of fuel cost per Kwh generated .But  for hydro power plant the fuel cost per Kwh   is null. Since  there are various other cost componentsmthat have to be taken in to consideration.                    In general cost of generation can be divide in to two.

Introduction: * A power amplifier is desi gned for good power gain.It must handled large votage current savings. * These high voltages and currents makes the power gain. * It is very important to have good effiency in a power amlifier. * An efficient power amplifier delivers the most signal power for the dc power it take from the supply.

Basic Transistor circuit: