Скачать или смотреть class seven ict chapter 2 | input device

I discussed class seven ict chapter 2 in today's class. In today's class we have discussed the input device in detail. There are many types of input devices, including Digital camera, Web cam, OMR and Scanner.
Digital camera:
Digital camera is a camera that takes pictures directly in digital way. One of our most familiar devices is the camera. In the early days of research, especially in space research, digital cameras began to be used as input devices for computers. At present, almost all types of digital cameras can be used as computer input devices.
Webcam:
Webcam or webcam is a special form of digital camera. It is attached to the computer as hardware. Laptop computers usually have a webcam attached. Static images or video images can be entered into the computer as input through a webcam.
Scanner:
A scanner is a device for making digital copies of any type of image, printed or handwritten document or an object.
OMR:
The full form of OMR is Optical Mark Reader. This is an input device. By judging the reflection of light it can understand different types of information.

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