OMR: Optical Mark Recognition. Used for filling in forms, such as Maths Challenge.
OCR: Optical Character Recognition. Computer identifies printed or written characters.
Data Logging: the collection and recording of data over a time period, using sensors, from which the data is fed into a computer: stored, then used, processed or analysed.
Sensors and typical uses:
Thermistor: Temperature Sensing
Geiger-Muller Counter: Radioactivity
Movement Sensor: Burglar alarms
Sound Sensor: Decibel levels on air traffic
Pressure Sensor: Pads on road for traffic
Infra-red Sensor: Detects break in the beam
Calibration: process of comparing an instrument's accuracy…