| 摘要 |
A machine is designed to be used as an educational tool. The machine is connected to a 120 volt alternating current source of electrical power and to a personal computer. The computer is programmed to put questions on a monitor and to send a signal to the machine, after a certain number of correct responses to the questions have been entered into said computer. The signal causes the source of electrical power to move one of a plurality of compartments, 75, to an opening, 58, in the machine so that a person may retrieve the object the compartment was holding, as a reward for having answered the questions correctly.
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