Since menu item 1 (ENTER DATA FROM KEYBOARD) is flashing, pressing the < ENTER) key brings up a new screen; you are then prompted to enter your data, one value at a time. Each value you enter is displayed on the screen. Data entry is terminated with the (CLEAR) key, which returns you to the Data Handling Menu. You select item 8 (SAVE DATA) and enter a file name; the program writes your data values to disk under that name. You then return to the Main Menu and select menu item 2, the Line Chart Menu.
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