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Computer Science · May / June 2024 · Paper 11 · Question 8

0478

As printed in the paper

The question as text

A farmer uses an automated robot to plant seeds in the field.

Read automatically from the paper; the printed page above is exact.

Show the answer and mark scheme

  • 8(a)[1]

    The robot can perform actions without human intervention

  • 8(b)[3]

    Any three from:

    It has a mechanical structure/framework
    It has electrical components
    It is programmable
    It can move

  • 8(c)[6]

    Any six from:

    A proximity sensor is used
    The sensor continuously sends digitised data to the microprocessor
    The microprocessor compares the data to a stored value/range of values
    If the value is within the range/matches the robot continues planting
    If the value is above/below/outside the range a signal is sent by the microprocessor to turn/stop the robot
    … using an actuator to turn/stop the robot
    This process repeats until the robot is turned off

  • 8(d)[2]

    Any two from:

    Example:

    The robot is more accurate when planting seeds
    The robot does not need to take breaks // works 24/7
    The robot will not get bored of performing a repetitive task
    The farmer can perform other tasks whilst the robot is planting the seeds
    The robot may be faster/more efficient (at planting seeds)
    Safer as the robot can work in a more dangerous environments (e.g. with animals in a field)
    Doesn’t need to pay labour costs/wages

  • 8(e)[2]

    Any two from:

    Example:

    The robot may have been expensive to purchase
    The robot may need maintenance and this may be costly
    The robot may take away jobs from humans that previously planted the seeds
    Farmer/workers may be deskilled
    Farmer may need training in how to use the robot
    If it breaks the farmer will need to manually plant
    If faulty it may cause damage to farm/seeds
    Cannot adapt to a new/unexpected event

  • 8(f)[2]

    Any two from:

    Example:

    The robot can now adapt itself by changing its own rules/data/ processes
    The robot will become more efficient
    … as it has a greater knowledge of its surroundings/environment
    … as it can remember where a fence is
    … as it can remember the route it needs to take
    … as it can remember where any obstacles are to avoid
    … as it can remember where to start and stop sowing seeds
    … as it may make fewer errors
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