Input Devices Flashcards
Hardware
the physical components of a computer.
Software
programs and instructions to run a computer.
Optical Character Recognition (OCR)
a process where text on a scanned document is recognised and converted to digital text.
Optical Mark Recognition (OMR)
a process where scanned marks on a page are automatically converted to inputs.
Biometric devices
device that recognises human physical characteristics, such as fingerprints.
Sensor
a device that records physical inputs.
Analogue
a signal, or data, that constantly varies.
Digital
a signal, or data that consists of two states, 1 or 0.
Encoding
the process of converting data or information to a particular form.
Analogue-to-digital-converter (ADC)
a device that converts analogue data to digital data.
Digital-to-Analogue convertor (DAC)
a device that converts digital signals to analogue
