Question about Texas Instruments TI-68 Calculator

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How can I resurrect dead dots on my TI-68 calculator ?

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SOURCE: TI 84 plus calculator, flashing dot in upper left hand corner

Hello,

When you turn the calculator on, its screen is cleared, save for a small square on the top left corner. This is the cursor and it is blinking: The calculator is waiting for you to order it to perform some calculation.

Try this simple operation
[1] [+] [1] [ENTER]. The calculator will display the result one line down justified to the right.

Hope it helps.

Posted on Aug 26, 2009

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1 Answer

4 dots on the graph screen


The function y= 3^x-4^x -1 (3 to the power of x, etc..) is a well-behaved function that should not give you any problem. It is a decreasing exponential (power function). Reset Calculator to defaults and try again. Leave Xscale at 1.


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Here is screen capture of the calculation, performed on TINspire with TI 84 plus keyboard.To type in the imaginary unit use key sequence [2nd][dot], do not use [ALPHA][X^2] for the letter I.
k24674_90.jpg,

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I don't know what buttons to hit to put exponents into my TI-68


For an exponent of ten, use the EE (Enter Exponent) key located just above the 7 key.

Apr 12, 2011 | Texas Instruments TI-68 Calculator

1 Answer

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My Ti 83 does fractions (once you go into "math" then "fraction>" it converts a decimal to a fraction) And the Ti86 came out a year after the TI83, so that's going to be a yes.

Mar 11, 2011 | Texas Instruments TI-68 Calculator

1 Answer

TI 84 plus calculator, flashing dot in upper left hand corner


Hello,

When you turn the calculator on, its screen is cleared, save for a small square on the top left corner. This is the cursor and it is blinking: The calculator is waiting for you to order it to perform some calculation.

Try this simple operation
[1] [+] [1] [ENTER]. The calculator will display the result one line down justified to the right.

Hope it helps.

Aug 26, 2009 | Texas Instruments TI-84 Plus Calculator

1 Answer

TI-30xIIs calculator


This function is FIX or FSE near the dot [.] or above it, so press [2nd] the the [FIX] where it located button [.] for example then the dot [.] him self: [2nd] [FIX] [.]
Rate me, thanks.

Apr 16, 2009 | Texas Instruments TI-30X-IISTK Scientific...

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Rounding function on my TI-30xIIs calculator, it won't turn off.


This function is FIX or FSE near the dot [.] or above it, so press [2nd] the the [FIX] where it located button [.] for example then the dot [.] him self: [2nd] [FIX] [.]
Rate me, thanks.

Apr 16, 2009 | Texas Instruments TI-30X-IISTK Scientific...

1 Answer

Parts of display don't work


You can try opening up the calculator (an exercise in itself, need to pry it open - use a plastic prying implement if you don't want to damage the edges) and you will see the display attached to the main board with a film ribbon. Believe it or not, this is GLUED to the board. You can sometimes bring these back to life by applying heat to the join from a hair dryer. This will soften the glue and remake the connection. This worked for me once, but it was delaying the inevitable and mine is now both broken and lost :(

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