write short notes on "digital camera and video camera".what is audio input and audio input device?write short notes in microphone and speech recognition system.

write short notes on "digital camera and video camera".what is audio input and audio input device?write short notes in microphone and speech recognition system.

Digital camera A digital camera is an input device. it is used to capture(or take) pictures and stores them in digital form. it does not use... 10:44

Digital camera
A digital camera is an input device. it is used to capture(or take) pictures and stores them in digital form. it does not use traditional camera film. it uses a light-sensitive processor chip to capture photographic images in digital form. these images are stored on a small diskette inserted in  the camera or on flash memory chip. the stored pictures or photographic images can then be loaded in the computer from the disk (or flash memory chip) for further processing.
Video Camera
The process of entering video data into a computer is called video input. Video input consists of motion pictures or movie films. the devices that are used to enter video input into computer are called video input devices.

Video camera is a video input device. it is used for recording video (i.e. movie films)and images of any type. the video and images are recorded in digital form. the recorded videos or images can be transferred into the computer by directly connecting the video camera to a USB port on the system unit.
Audio and Audio input device
Audio input is the process of entering any sounds into the computer. it may include speech, music etc. the device that is used to enter/record sound(audio input ) into computer is called audio input device.
Microphone


Microphone is most commonly used an as audio input devices. it is used to enter sound (or voice) into the computer. it is connected with computer through sound card. A sound card receives sound from microphone in analog form and converts it into digital form. So the sound is stored inside the computer in digital form.
Speech-Recognition system
A system that coverts the voice in to text of commands is known as speech recognition system or voice recognition system. in this system , a microphone is used as an input device.

Speech recognition system allows as user to use voice as input. the user speaks through microphone to give commands to computer such as opening programs, printing, document, shutting down the computer, saving the document etc.

Speech recognition system are not commonly used due to English language pronunciation and limited vocabulary.