BTM 200 Lecture Notes - Lecture 7: Optical Mark Recognition, Radio-Frequency Identification, Input Device
29 May 2020
School
Department
Course
Professor
Document Summary
Based on an identifying tag bearing a microchip that contains specific code numbers. These code numbers are read by the radio waves of a scanner linked to a. database. Active rfid tags have their own power sources and can transmit signals over a. distance to a reader device. Passive rfid tags have no battery power of their own and must be read by some sort of scanner. Uses a special scanner that read special marks. Converts scanned text from images to an editable text format. Digital cameras: use light-sensitive chip to capture. Webcams: frame-grabber video card and full-motion video card. Record analog sound and translate it into digital files for storage and processing: 2 ways to digitize audio: sound board and midi board. Use a microphone or telephone as an input device. Converts a person"s speech into digital signals. Input devices that collect specific data directly from the environment and transmits it to a computer.
