IB Design Technology Topic A3.4: Introduction to Electronic Systems Questionbank

By using binary logic to execute tasks

By representing data as discrete binary states (0s and 1s) and manipulating them using logic gates

By processing information as continuously varying analogue signals

By amplifying input signals without converting them into digital data

To ensure the output voltage is always inverted relative to the reference voltage

To prevent the amplifier from drawing current and changing the voltage at the potential divider junction

To allow the motor to draw its required operating current directly from the non-inverting input

To increase the sensitivity of the LDR by boosting the voltage across the 10kΩ resistor

Feedback control of digital circuits

Noise reduction in resistors

Difference between analogue and digital signals

Amplification using op-amps

To store electrical energy briefly and help smooth/filter voltage in the circuit

To provide long-term backup storage for digital data when the power is off

To amplify electrical signals like a transistor-based gain stage

To act as a protective heat-insulating covering for the board