Computer input devices include keyboards, mice, cameras, scanners, light pens, handwriting input boards, joysticks, and voice input devices.
1, the mouse (Mouse) is a hand-held screen coordinate positioning device, it is adapted to the menu operation of the software and graphics processing environment and the emergence of a kind of input device, especially in today's popular Windows graphical operating system environment to apply the mouse is convenient and fast. There are two kinds of commonly used mice, one is mechanical, the other is photoelectric.
2, the camera (CAMERA or WEBCAM), also known as the computer camera, computer eye, electronic eye, etc., is a video input device, is widely used in video conferencing, telemedicine and real-time monitoring.
3, scanner (scanner), is the use of optoelectronic technology and digital processing technology, scanning method of graphics or image information into a digital signal device.
4, light pen, also known as photoelectric pen, with light and photoelectric tube will be a special form of data, such as bar code record sheet read into the computer system, a device, the shape of which is similar to the pen, it is commonly known as light pen.
5, voice input and output devices refers to the human voice information directly into or out of the computer's human-computer interface device. People in daily life is mostly through the voice to convey information, so the voice input and output devices is an important development direction of the human-computer interface device.
Expanded Information:
Input devices are one of the main devices for exchanging information between the user and the computer system. One of the main devices. A computer can receive a variety of data, both digital and non-digital, such as graphics, images, sounds, etc., which can be input into the computer for storage, processing and output through different types of input devices.
Nowadays, people are trying to make computers "auditory" and "visual", so that computers can understand what people say and write, and receive information in the same way that people receive it.
As a result, new research directions have been opened up, including pattern recognition, artificial intelligence, and signal and image processing. On the basis of these research directions, research directions such as language recognition, text recognition, natural language solving and machine vision have been developed.
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