Which system is responsible for converting analog sensor signals to digital form for processing?

Which system is responsible for converting analog sensor signals to digital form for processing?

• A. Analog-to-digital converter
• B. Standby Attitude Indicator
• C. Air Data Computer
• D. Flight Management System

Answer: (A)

Converting analog sensor signals to digital form is done by the analog-to-digital converter. Sensors like pitot tubes, temperature probes, and other flight sensors produce continuous, changing voltages. An ADC samples these voltages at a chosen rate and quantizes them into discrete digital values that a processor can use. That digital data is then fed into systems such as the Air Data Computer to compute airspeed, altitude, and other parameters. The Standby Attitude Indicator is an instrument that displays attitude and doesn’t perform data conversion. The Air Data Computer uses the digital data it receives (often after it’s been digitized by an ADC) to compute flight parameters, but the conversion step itself is done by the ADC. The Flight Management System relies on processed digital data from various sources and isn’t the device whose primary function is converting analog signals to digital.

Converting analog sensor signals to digital form is done by the analog-to-digital converter. Sensors like pitot tubes, temperature probes, and other flight sensors produce continuous, changing voltages. An ADC samples these voltages at a chosen rate and quantizes them into discrete digital values that a processor can use. That digital data is then fed into systems such as the Air Data Computer to compute airspeed, altitude, and other parameters.

The Standby Attitude Indicator is an instrument that displays attitude and doesn’t perform data conversion. The Air Data Computer uses the digital data it receives (often after it’s been digitized by an ADC) to compute flight parameters, but the conversion step itself is done by the ADC. The Flight Management System relies on processed digital data from various sources and isn’t the device whose primary function is converting analog signals to digital.