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Digital camera, Types of digital camera, optical readers

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Digital Camera Digital camera is an input device that takes picture and store them as digital images. Digital camera store captured image storage in our camera or on some type of memory card. Photo taken with a digital camera are typically transferred to a computer using a wired or wireless connection. Many digital cameras allowed the user to edit the image that the number of digital photos depend on the amount of memory in the camera. The main advantage of digital camera is that making photo is enough and save and fast. It does not require any film processing management phone and other mobile devices has built-in digital cameras digital still cameras are available in a wide variety of sizes and capabilities. A quality of digital camera photos depend on its resolution  and describes the  sharpness of an image. Image resolution for Digital Camera is measured in Megapixel. Megapixel are million of pixel in a graphic, today's cameras are typically between 5 and 20 Megapixel. Type...
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Data Communication/Wired Base and Wireless Transmission

Data Communication Data communication is a process of transferring data electrically from one place to another. It can be transferred by using different media data is application of graph facts and figures. It may consist of text graphics and sound etc etc. An electromagnetic or light waves are used to transmit data from one place to another is called a signal. Propagation of signal across a communication medium is called signaling. Communication of data from one place to another place in the form of signal you called transmission. Elements of data communication 1.  Sending device A device that sends the message is called sending device. It is also called source a transmitter the sending device can be a computer fax machine are mobile phone. It is a computer is usually used as sending device in communication system. 2.   Receiving device  A dvice that receive the message is called receiving device. It is also called sync the receiving device can be a computer printer...
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What Is Computer/ Types of Input and Input Device

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What is Computer  computer is an electronic device which is used to process data and give a useful information. Types of Input Devices Touch screen Heart touching touch-sensitive display device the user can touch different path of the screen with the finger are stylish to import data and issue command. Many touchscreen today are multi touch and can recognise input from more than one finger at the time. For example the user can use to finger to enlarge or rotate an image on the screen touch screen are commonly used in tablet, mobile devices, detail self-checkout, ATMs and information kiosks.  Some  models of desktop computer and laptop also have touchscreen touchscreen are popular because. The user can interact with the computer easily without an external input device. Types Of Touch Screen 1. Resistive :  Tata chicken that have resistive screen can sense the pressure. It can be used with a finger are an ordinary stylist. Resistive screen can also be used by someone w...
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