Texas Instruments TI-92 Getting Started page 2

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Graphing Technology Guide: TI-92

Technology Tip: There are many different ways to get to the most commonly used screens on your TI-92. One

method is by using the APPS menu (Figure 5.3) which is accessed by pressing the blue APPS key on the right side

of the calculator. Thus, to get to the Home screen you can press 2nd QUIT,

HOME, or APPS ENTER.

Figure 5.3: APPS menu

5.1.2 Editing: One advantage of the TI-92 is that you can use the cursor pad to scroll in order to see a long

calculation. For example, type this sum (Figure 5.4):

1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9 + 10 + 11 + 12 + 13 + 14 + 15 + 16 + 17 + 18 + 19 + 20

Then press ENTER to see the answer. The sum is too long for both the entry line and the history area. The

direction(s) in which the line extends off the screen is indicated by an ellipsis at the end of the entry line and arrows

(

) in the history area. You can scroll through the entire calculation by using the cursor pad (

or , ) to put

the cursor on the appropriate line and then using

to move the cursor to the part of the calculation that you

wish to see.

Figure 5.4: Home screen

Often we do not notice a mistake until we see how unreasonable an answer is. The TI-92 permits you to redisplay an

entire calculation, edit it easily, then execute the corrected calculation.

Suppose you had typed 12 + 34 + 56 as in Figure 5.5 but had not yet pressed ENTER, when you realize that 34

should have been 74. Simply press the

direction on the cursor pad as many times as necessary to move the

blinking cursor line until it is to the immediate right of the 3, press

to delete the 3, and then type 7. On the other

hand, if 34 should have been 384, move the cursor until it is between the 3 and the 4 and then type 8. If the 34

should have been 3 only, move the cursor to right of the 4, and press

to delete the 4.