How to quickly turn off Casio, Citizen, and TI calculators.

Are you using a calculator at school but don't know how to turn it off? Don't worry! Most calculators from brands like Casio, Citizen, or Texas Instruments (TI) have an automatic shut-off feature after a few minutes of inactivity. However, if you need to turn it off immediately to save battery or avoid disturbing others, there are still ways to do it.

In this article, Tiptory will guide you on how to turn off the most popular calculators for students – from Casio FX-570VN Plus, Citizen SR-270X to TI-84 – with just a few simple steps. Let's discover how to do it quickly and easily, even if you're not tech-savvy!

How to turn off a laptop at school

Here are some simple ways to turn off a handheld calculator, especially the kind used in schools:

• Computers without a power button: These computers will automatically shut down after a few minutes of inactivity.

• The device has a solar panel: You can cover this panel to make the device turn off faster.

• The machine has an ON/OFF button: Some types require you to press the "2nd" button first, then press "ON/OFF" to turn off the machine.

Part 1: How to make a solar-powered computer turn off automatically?

Step 1: How to quickly and easily shut down your laptop.

Don't worry if your computer doesn't have a power button. Here's the easiest way to shut it down:

The machine will automatically turn off after a few minutes.

Most handheld calculators have an automatic shut-off feature when not in use.

• Simply stop using it and set the device aside.

• After a few minutes, the device will automatically turn off to save battery power.

• Suitable for machines without an ON/OFF button.

When should you use this method?

• When you're not in a hurry to turn off the machine.

• When you don't know how to turn it off manually.

• When using computers in class or during exams.

Step 2: How to quickly turn off your solar-powered computer

If your solar-powered computer doesn't have an off button, try this:

Cover the solar panel to turn off the machine.

You can force your computer to shut down by blocking out the light.

• Use your thumb to cover the entire solar panel array.

• When the device no longer receives light, the screen will dim.

• After a few seconds, the machine will automatically turn off.

When should this method be used?

• When you want to shut down the computer immediately.

• When there is no OFF button or no other way to turn it off.

• When you need to save battery power during class or while taking a test.

Step 3: How to shut down your computer using a keyboard shortcut.

If your computer doesn't have a power button, you can try shutting it down by pressing the following key combination:

Try the following key combinations to shut down your computer.

Hold down the following keys simultaneously for a few seconds:

• 2 + 3

• 5 + 6

• ÷ + ×

• 9 + -

• 1 + 2 + 4 + 6

• 1 + 3 + 4 + 5

• 1 + 2 + 3

Usage tips

• Press and hold the keys simultaneously for about 3–5 seconds.

• If one combination doesn't work, try another.

• Suitable for devices that lack an ON/OFF button or do not respond when the solar panel is covered.

Step 4: How to shut down your computer using a combination of keys including the power button.

In addition to pressing regular key combinations, you can combine them with some function keys to increase efficiency:

Hold down the ON, C/CE, or AC key while trying the key combination.

Follow these steps:

• Select one of the previously listed key combinations (e.g., 2 + 3 , 1 + 2 + 3 , etc.).

• Simultaneously press and hold one of the following keys:

  • ON

  • C/CE

  • AC

• Hold down all the keys for a few seconds.

When this method works

• This applies to computers that do not have an OFF button.

• Useful when individual key combinations don't work.

• Suitable for common student calculators.

Part 2: Tips to force your Citizen computer to shut down immediately without waiting.

Step 1: The Citizen computer will shut down automatically after a few minutes.

If you can't find a way to turn it off manually, don't worry. The machine will automatically turn off when not in use.

Citizen computer automatic shutdown time

• The machine will automatically turn off approximately 8 minutes after the last button press.

• No further action is needed; simply set the machine aside and wait.

• This is a battery-saving mechanism available in most Citizen watches.

When should this method be applied?

• When you're not in a hurry to turn off the machine.

• When the machine doesn't have an OFF button or the key combination doesn't work.

• When you are in class or taking an exam and want to avoid the risk of making a mistake.

Step 2: Quick keyboard shortcuts for Citizen computers

If you're using a Citizen calculator, there's a special key combination that allows you to shut it down immediately.

How to shut down your computer using a key combination.

Press and hold the following keys simultaneously:

• ÷

• ×

• %

• Check

• Correct

• Correct (press the Correct button twice)

Notes on usage

• Hold down all the keys for a few seconds until the screen turns off.

• This only applies to Citizen calculators that have all the keys shown above.

• If you don't see the "Check" or "Correct" button, try other options such as waiting for the computer to shut down automatically.

Part 3: Keyboard Shortcut Key Combinations on Popular TI Models

Step 1: Identify the correct 2nd and ON buttons to turn off the TI calculator.

TI (Texas Instruments) graphing calculators can be manually turned off using a key combination. First, you need to locate the correct keys.

Location of the 2nd button on a TI computer

• It's usually located in the upper left corner of the keyboard.

• It's a button with a different color, making it stand out from the other buttons (usually yellow or blue).

• Used to activate the secondary functions of the keys.

Location of the ON or ON/OFF button

• Most commonly, it's located in the upper right corner , just above the number sequence.

• On some models, this button is located in the bottom left corner .

• It may be labeled "ON" or "ON/OFF" , depending on the model.

Once you've located these two buttons, you can use the 2nd + ON (or 2nd + ON/OFF) combination to turn off the device. If that doesn't work, try other methods such as waiting for the device to shut down automatically or covering the solar panel (for solar-powered devices).

Step 2: Press the 2nd button to activate the secondary function.

On TI calculators and some similar models, the 2nd key plays an important role when you want to use the secondary functions of other keys.

The function of the 2nd button

• Activate the second function (usually printed in a different color above each key).

• This is a required step if you want to use the shutdown command (if available).

• After pressing 2nd , the next key you press will perform its corresponding sub-function.

For example, to turn off the machine, you usually need to press 2nd , then press ON (i.e., 2nd + ON/OFF).

Step 3: Press the ON button to turn off the graphing calculator.

After pressing 2nd , simply press ON to turn off the TI graphing calculator.

How to shut down a TI computer

• With most TI graphing calculators, the 2nd + ON key combination will shut down the machine.

• Simply press the buttons in sequence: press 2nd , then press ON .

For TI Nspire computers

• Press Ctrl , then press ON to turn off the computer.

• This is a special method for the Nspire series.

Part 4: How to turn off your Casio calculator as easily as pie.

Step 1: Locate the Shift and AC buttons on your Casio calculator.

To use special functions or turn off your Casio calculator, you need to know the location of the following key keys:

Shift key

• It's usually located in the upper left corner , just below the screen.

• This button is usually marked with the symbol ⇧ Shift or a prominent color.

• Used to activate the secondary functions of the key.

AC (On) button

• It's usually located on the right side , just above the number pad.

• This button may be labeled AC or On depending on the model.

• Used to turn the machine on and off.

Step 2: Press the Shift key ⇧ to open the secondary function.

On Casio calculators, the ⇧ Shift key allows you to access the secondary functions of the keys.

• When you press Shift , the keys will activate a secondary function, which is printed in a different color on each key.

• This step is necessary when you want to use special commands or shut down the computer.

• You just need to press Shift once before pressing the next key.

Step 3: Press the AC button to turn off the Casio calculator.

On many Casio calculators, the AC button is used not only for clearing but also for shutting down the calculator when activated by the Shift key.

• After pressing ⇧ Shift , press the AC button.

• This is a secondary function of the AC button, which is to turn off the machine .

• Hold or lightly press depending on your computer to automatically shut down.

Part 5: How to properly shut down your HP computer

Step 1: Locate the Shift and On buttons on your HP computer.

To use special functions or shut down your HP computer, you need to know the location of these two important keys:

Shift key

• It's usually located on the left side of the keyboard.

• Used to activate the secondary functions of other keys.

On button

• It may be located on the right or bottom-left corner of the computer.

• Used to turn the machine on and off.

Step 2: Press the Shift key to activate the secondary function.

On HP computers, the ⇧ Shift key allows you to access the key's secondary functions.

• Press ⇧ Shift once to unlock the second command on the keyboard.

• Next, press the key you want to use for its secondary function.

• This is a necessary step to perform advanced operations or shut down the computer.

Step 3: Press the On button to turn off your HP computer.

After pressing Shift ⇧ , you can use the On button to turn off the computer:

• On many HP computers, the secondary function of the On button is to shut down the computer .

• Instructions: Press ⇧ Shift , then press On .

• The screen will turn off immediately if the operation is correct.

Part 6: The DISP and Correct Duo: How to Turn Off Casio DJ Series Machines

Step 1: Press and hold the DISP button to turn off the device (if applicable).

Some computer models, especially office or financial computers, have an additional DISP button that allows you to adjust settings or shut down the computer.

How to do it

• Find the DISP button : it's usually located on the left side of the computer.

• Press and hold the DISP button for a few seconds.

• On some models, this action may shut down the computer or adjust the display.

Note

• Not all computers have a DISP button.

• The primary function of the DISP is to adjust the brightness or display format, but on some models, it can also be used to shut down the computer.

Step 2: Press the Correct button while holding down DISP to turn off the machine.

Some computer models, especially Citizen computers, allow you to shut down the computer using a special key combination.

How to do it

1. Press and hold the DISP button (usually located on the left side of the machine).

2. While holding down DISP, press the Correct button (usually on the right or near the top).

3. The device will shut down if this combination is supported on the model you are using.

Note

• The DISP + Correct combination only works on certain specific models.

• If the machine is unresponsive, try another shutdown method such as the key combination ÷ × % Check Correct or wait for the machine to shut down automatically.

Step 3: Turn off the computer by simultaneously pressing DISP and Correct.

On some Citizen computers, you can quickly shut down the computer using the DISP + Correct key combination.

How to do it

1. Press and hold both buttons simultaneously :

   • DISP (usually located on the left)

   • Correct (usually located on the right or near the top)

2. Hold both keys down for a few seconds .

3. Release them simultaneously – the machine will automatically turn off.

Note

• This method only works on certain Citizen watch models that support this key combination.

• If that doesn't work, try other methods such as the combination ÷ × % Check Correct or wait for the machine to shut down automatically after a few minutes.

Author: Hannah Dillon .