全国工商管理硕士入学考试研究中心

    flying airplanes and driving subway trains.And some do a simple job.

    When an automatic washing machine is switched on,water pours in.The machine waits until the

    water ishot before washing the clothes.It does this by“feedback.”Information about what

    ishappening is “feedback”into the robot to tell it what to do next.

    Our eyes ,ears and other senses are our feedback .They tell us what is going on around us.So

    robots are like people in two ways.They work and they have feedback.

    There are robots all around,making our lives easier.Some of them ,like the pocket calculator,

    can work much more quickly than human beings can.And they rarely make mistakes.

    In some ways robots are better than people.They work quickly,but do not make mistakes.They do

    not get bored doing the same job over and over again.And they never get tired .

    Robots are very useful in factories.They can be taught to do many different jobs.First their

    electronic brains must be shown how the job is done .A person moves the robot'“arm”and“hand”through

    each part of the job.The robot's brain remembers each move.When the robot is put to work on its own