| 摘要 |
A programmable electronic calculator is provided having an LED display device and a single-step key for causing display and execution of individual steps of a program stored in the calculator, and for causing display of the results of said execution by means of a single actuation of the single-step key. As the key is depressed, the next program step that is to be executed is displayed, together with the number of that step in the program. When the key is released, the program step is executed and the result is displayed.
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