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Design and Technology
What type of signal is produced by a thermistor or a light-dependent resistor?
In a flowchart, what shape of box represents a decision?
Which type of logic gate can be represented by two switches in series?
A circuit contains several logic gate integrated circuits. Which of the following would be an advantage of redesigning it to use a microcontroller?
Allows the size of the circuit to be reduced
It would work faster
A simple lighting circuit contains two switches. If EITHER switch is pressed a lamp will light. What type of logic gate is represented by the two switches?
How many possible output combinations are there from two digital signals?
A push-to-break switch could be used to make a mechanical version of which type of logic gate?
What is represented by a rectangular box in a flowchart?
Start or stop of the sequence of events
Input or output
Which of the following statements about microcontrollers is FALSE?
They can be programmed to respond to multiple inputs.
A microcontroller is not able to process analogue inputs.
A single microcontroller could carry out the functions of an AND gate and a NOT gate.
What is the purpose of a pull-down resistor?
To take an input pin down to 0V so that an IC knows it is off.
To prevent a current that is too high flowing into the input pin of an IC.
To allow the input pin of an IC to float high