Question about Texas Instruments TI-5640 Calculator

# The number 1 sometimes prints as 0 in the tens column. Is there any way to fix this?

The total on the display is always correct, but the printed number is wrong.

Posted by on

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
Goodluck!

Posted on Jan 02, 2017

To make sure that the calculator is misbehaving, I suggest that you create a simple 4X4 matrix, that is not singular, and calculate it reduced row echelon form by hand, then use the calculator to perform the reduction. You can also generate a random 4x4 matrix and calculate the rref forms by hand and with the calculator. If the calculator is defective, try to upgrade the OS. If it is still defective, well, the deck is stacked aaginst you. It may then be time to get another one or to send it for repairs.

Posted on Jan 21, 2012

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## Related Questions:

### I need your help to tell me what 1925 is rounded to because at school I am really struggling and I look a bit silly in front of everyone and I get enbaressed

That depends on what you want it rounded to,

To the nearest thousand: 2000
To the nearest hundred: 1900
To the nearest ten: 1930

Feb 01, 2017 | Homework

### Round 3 to ten

Rounding 3 to the nearest tens.

The process should always be the same.

Step 1 - identify the column in question.
Step 2 - go the the column immediately to the right of this column
Step 3 - if this number is 5 or more, add 1 to the column in question and make all numbers to the right 0, or if to the right of the decimal, eliminate them.
Step 4 - if this number is 4 or less, don't add 1 to the column in question and make all number to the right 0, or if to the right of the decimal, eliminate them.

To assist, I have written the number as 03.

Step 1 - Tens column is the 0.
Step 2 - Column immediately to the right is 3
Step 3 - Number is not 5 or more
Step 4 - Number is 4 or less, set the numbers to the right to 0

The answer is 0. The numbers -4, -3, -2, -1, 0, 1, 2, 3, and 4 when rounded to the nearest 10, all round to 0.

Good luck,

Paul

Oct 11, 2016 | Office Equipment & Supplies

### Kyocera FS6525MFP - How do I get it to display the number of copies already printed when I have a large job, such as 100 or 300 copies.

Press "System Menu / Counter" button. Press "Report". Press "Report Print". Press "Status Page". Press "Yes". The Status Page will print. Look for Counters in the right column just over 1/2 way down, then follow it down 4 lines to Total. The total page output is just to the right of the Total. Note don't use the Total at the bottom of the page, that is for scanned pages.

Sep 12, 2013 | Kyocera Office Equipment & Supplies

### My color black does not print at times

Hi mserio007,

1. Press the button on the printers operation panel.

2. Press the left [] arrow buttons to select [MAINTENANCE].

3. Press the button.

4. Press [] to select the cleaning setting you want. Select [HEAD CLEANING] for normal print head cleaning. Select [HEAD REFRESHING] for deep print head cleaning.

5. Press .

6. Print a Nozzle Check Pattern and perform at least two Head Refreshing if the pattern is not correct.

If this does not work, then It seem the contacts on the print head are damaged and you have to replace the print head to resolve the issue. But before that you can follow the steps below to remove the print head and then cleaning the copper contacts on them with a cotton swab dampened in distilled water until they are clean after drying them check the issue if the problem persist then replace the print head to resolve the issue.

1. Make sure the power is turned on.

2. Press [Open] and lift up the scanning unit. The print head holder automatically moves to the center of the machine.

CAUTION:

Do not try to manually move or stop the print head holder.
Do not touch any metal parts.
Press on the tab to release the ink tank, then remove it from its slot. Repeat this process until all ink tanks have been removed from print head.

3. Lift up the lock lever and take out the print head.

5. Insert the ink tank into the empty slot on the print head. Press down gently on the top of the tank until an audible click is heard. Make sure the ink tank is inserted into the correct color slot.

6. Close the scanning unit until it locks into place.

7. When the LCD displays [ALIGN PRINT HEAD], press on the operator panel. The machine will print a horizontal line pattern, and the LCD will display [CHANGE H VALUE] on the top row and [A 0] at the bottom row.

(A): Column A
(0): Value for Column A

8. In column A on the printout, note which box has the most solid image. Note the value next to this box and use [Left cursor] or [Right cursor] on the operator panel to enter it then press .

9. Repeat step 9 for columns B to K.

10. When values for all columns have been entered and the LCD displays [PRINT VERT. PATTERN?] on the top row and [YES=(*) NO=(#)], press [#] to return to standby mode.

Hope it helps.

Thank you for using FixYa.

Aug 24, 2011 | Canon MultiPASS MP730 All-In-One InkJet...

### Can't find a manual online. What does 5/4 mean, and how do I turn it off? Same for E. My biggest problem is that when I add up numbers with the print function on (for depositing large batches of...

The manual for the Canon P1-DHV is online at http://www.usa.canon.com/app/pdf/calculator/P1-DHV_G_USA_HWB.pdf>.
When the display shows "5/4", the calculator is doing 5/4 rounding which means: 5 or above round up, 4 or below round down. To control rounding press the "5/4" key.
When the display shows "E" the calculator could not complete a calculation. It can be because of dividing by 0, or because the total exceeded 1 trillion, or because the operator entered calculations faster than the calculator could complete them. Press the CI/C key to clear it.
I can't explain why you are not getting a total on the tape. Try the following example from the manual exactly as shown, and let me know if your tape shows the total.
1. Clear the calculator (press [CI/C])
2. Choose 5/4 rounding (press [5/4] until "5/4" displays)
3. Choose add mode (press [DEC] until "A" displays)
4. Choose cost-sell-margin mode (press [B-T] until "B" displays)
5. Turn printer on (press [PRINT] until "PRINT" displays)
6. To calculate: \$12.55 + \$15.75 - \$5.30
7. Key in: 1255 [+] 1575 [-] 530 [=]
8. Tape shows: [0. C] ... [12.55 +] ... [15.75 -] ... [5.30 =] ... [23.00 *]

Apr 07, 2011 | Office Equipment & Supplies

### Auto print head alignment wont work and I need to do a manual alignment. How do I do this for a MP970?

1. Make sure that the machine is turned on, and then load three sheets of A4 or Letter-sized plain paper in the Rear Tray or Cassette. 2. Open the Paper Output Tray, and then open the Output Tray Extension. (1) Put your finger in the center of the top of the Paper Output Tray and open it gently. (2) Open the Output Tray Extension. 3. Press the Paper Feed Switch to select the paper source where you have loaded paper. 4. Print the print head alignment pattern. (A) Press the HOME button. (B) Select Settings , then press the OK button. (C) Select Maintenance , then press the OK button. (D) Select Manual head align , then press the OK button. (E) Select Yes , then press the OK button. (F) When " Did the patterns print correctly? " is displayed, confirm that the pattern is printed correctly, select Yes , then press the OK button.The input screen for the head position adjustment values is displayed.
Note:If you select Head alignment print, the machine exits the process after printing the current head position adjustment values.
5. Look at the first printout, and then adjust the print head position. (A) Check the printed patterns, and use the or button to input the number of the pattern in column A that has the least noticeable vertical streaks. (B) Repeat the same procedure until you finish i nputting the pattern number for columns B to F, then press the OK button. (C) Confirm the displayed message and press the OK button.
Note: If it is difficult to pick the best pattern, pick the setting that produces the least noticeable vertical white streaks.
6. Look at the second printout, and then adjust the print head position. (A) Check the printed patterns, and use the or button to input the number of the pattern in column G that has the least noticeable vertical streaks. (B) Repeat the same procedure until you finish inputting the pattern number for columns H to K, then press the OK button. For column K, the best pattern will be smooth and have no streaks in the border indicated by the arrow. (C) Confirm the displayed message and press the OK button.
7. Look at the third printout, and then adjust the print head position. Check the printed patterns, and use the or button to input the number of the pattern in columns L and M that has the least noticeable horizontal streaks, then press the OK button.
Source

Mar 01, 2011 | Office Equipment & Supplies

### Where do I go to find an on-line manual for TI 5045 Sv Texas Instruments calculator?

TI-5045 SV
ii
English.............................................................. 1
Fran?ais ............................................................ 6
Espa?ol ............................................................. 11
Portugu?s ........................................................... 16
Examples, exemples, ejemplos, exemplos .............................. 21
ILLUSTRATIONS ¦ FIGURES ¦ ILUSTRACIONES¦ ILUSTRA??ES
Removable tab
Languette
Leng?eta extracci?n
Ink roller
Rouleau encreur
Tamp?n de tinta
Cartucho de tinta
1
English
Your Texas Instruments calculator has a built-in printer for producing a permanent record printout of
your calculations with negative numbers printed in red. A big, easy-to-read display also enables you to
check entries or perform quick calculations without printing.
GETTING STARTED
OFF ON PRT IC GT
POWER
1. Connect the calculator to a proper power outlet (110-120V or 220-240V
where available).
2. The calculator is turned on by setting the POWER switch to the PRT
position.
Inserting the paper (see illustrations 1, 2, 3, and 4 on page ii).
1. Turn on the calculator.
2. Open the printer compartment cover by pressing down on its front edge and sliding it back in the
direction of the arrow.
3. Fit the roll of paper on the holder so that it unrolls from the bottom, with the loose end toward the
calculator.
4. Cut the end of the paper squarely and insert it firmly into the printer slot on the back of the
calculator.
5. Press & until the paper is in the printing position.
Replacing the ink roller (see illustrations 5 and 6 on page ii)
1. Turn the calculator off and tear off the excess paper.
2. Remove the printer cover by pressing down on both sides of the front edge and sliding back in the
direction of the arrow.
3. Remove the old ink roller by lifting it with the removal tab.
4. Insert the new ink roller into the compartment and press down gently until it snaps into place. Close
the printer compartment.
Note: The old ink rollers should not be refilled. Replacement rollers can be obtained from your local
retailer. The warranty does not cover ink roller replacement.
2
SELECTION SWITCH SETTINGS
OFF ON PRT IC GT
POWER ROUND
: 5/4 9 + F 0 2 3
DECIMAL
4
TAX
SET CALC
Set the POWER, ROUND, DECIMAL and TAX switches as required.
Note: The TAX switch is spring-loaded to return to CALC when it is moved to SET and released.
The switch settings are summarized in the following table:
SWITCH SETTING FUNCTION
POWER ON
PRT
IC
GT
No printout is provided; however, the display can be printed by pressing
4.
The printer provides a printout of your calculations but does not count them.
The printer is on and an item count of additions and subtractions to or from
the register is printed when sub-totaled or totaled.
The GT position controls whether or not the totals from the independent add
register are accumulated in the grand total register.
ROUND Rounds the result of a calculation to the selected number of decimal places.
:
5/4
9
Truncates the result to the selected number of decimal places.
Rounds the result up or down according to its value. For example, when the
DECIMAL switch is set to 2, the result is rounded up if the third decimal
position is 5 or more and rounded down if it is 4 or less.
Rounds the result up to the selected number of decimal places.
Ex. 220 P 6
Setup: PRINTER: PRT, ROUND: :
DECIMAL: 2, TAX: CALC
Ex. 220 P 6
Setup: PRINTER: PRT, ROUND: 5/4
DECIMAL: 2, TAX: CALC
Press Display Printout Press Display Printout
2 0. 0¦ C
220 ' 220. 220¦ P
6 3 36.66 6¦ =
36¦66 ?
2 0. 0¦ C
220 ' 220. 220¦ P
6 3 36.67 6¦ =
36¦67 ?
DECIMAL + Add mode: All results are given with two decimal places. For addition and
subtraction only, a decimal point is automatically placed to the left of the last
two digits entered, unless the number already includes a decimal point.
F Floating mode: Any results are displayed and printed with the maximum
number of decimal places.
0 2 3 4 Fixed decimal mode: Sets the number of decimals to 0, 2, 3, or 4.
3
TAX SET
CALC
Lets you enter a tax rate to perform tax calculations.
Stores the tax rate. Pressing ! or " after a tax rate has been entered,
adds/subtracts the stored tax rate to/from the value in the display.
Ex. VAT = 17.5 %
100 + VAT
Ex. VAT = 17.5 %
235 - VAT
Setup: PRINTER: PRT, DECIMAL: F, ROUND: 5/4, TAX: CALC
Move and hold the TAX switch to SET. Press 217 L 5 and release the TAX switch. It
automatically returns to CALC. 17.5% is printed.
Press Display Printout Press Display Printout
2 0. 0¦ C
100! 117.5 100¦
17¦5 @
117¦5 ?
2 0. 0¦ C
235" 200. 235¦
N35¦ @
200¦ ?
Note: The most common setup is POWER: PRT, ROUND: 5/4, DECIMAL: 2, TAX: CALC. Use these
positions for the examples unless other settings are given.
KEY DESCRIPTIONS
Basic keys
I Clear Entry: Clears an entry, enabling you to enter another number in its place. Note
that this key does not clear the add register.
2 Clear Key: Clears the add register, any pending operations, and the display. 0.C is
printed. Does not clear the memory.
( Right Shift: Deletes the right-most digit entered from an entry before an operation key is
pressed. Shifts the remaining digits one place to the right.
L Decimal Point: Enters a decimal point.
4 Date/Non-Add: Prints a date (such as 12¦10¦96) or a number for reference purposes.
Does not affect calculations. This entry is printed on the left side of the printout, the date
or number preceded by the # sign.
: Subtotal: Gives the intermediate total from the add register. Using this key does not
affect the contents of the add register.
. Subtract: Subtracts a number from the add register. Displays the cumulated result.
E Total: Gives the total from the add register, and then clears the register.
4
Multiplication, division, percent and margin keys
? Multiply: Multiplies the number in the display by the next value entered.
' Divide: Divides the number in the display by the next value entered.
3 Equals: Completes any pending multiplication or division operation.
> Percent: Calculates percentages, ratios, add-ons (e.g. of VAT), or discounts.
# Gross Profit Margin: Calculates the selling price of an item when its cost and gross
profit (or loss) margin are known; also used to obtain a price excluding VAT.
Ex.
Cost: 594
Profit margin: 40%
Press:2 594 # 40 3
Selling price: 990
Gross profit: 396
Ex.
Selling price including VAT: 252
VAT %: 20%
Press: 252 # 20 . 3
Selling price excluding VAT: 210
VAT: 42
/ Grand Total: Gives the grand total of the operations previously performed and stored in the
Grand Total register. Every time a total is obtained with E it is cumulated into this register
(printout shows G+) which is only cleared when / is pressed twice. During long
calculations, if / is not used, this re

Jan 16, 2011 | Office Equipment & Supplies

### How to turn printing on and off?

PRINT KEY: To save paper you can only print what is displayed, even in non-print mode. Pressing after the entry of a number will print the entry with the symbol “#” even in non-print mode. Pressing will insert a separator into a number entry such as a code, date, etc. Separators are displayed as a period and dashes but printed as periods. MEMORY + KEY / PRINT ON / OFF KEY: Pressing selects print mode or non-print mode. Cause the calculator to operate in a display / print or display only mode, depending upon the calculator’s present state. “P” on the display: Print mode. “NP” on the display: Non-print mode. MEMORY – KEY / DECIMAL SELECTION KEY: Pressing sets the number of decimal places in the result. “F” on the display: The answer is displayed in the floating decimal system. “3, 2, 1, 0” on the display: Presets the number of decimal places in the answer. “A” on the display (Add mode): The decimal point in addition and subtraction entries is automatically positioned to the 2nd digit from the lowest digit of entry number. Use of the add mode permits addition and subtraction of numbers without entry of the decimal point. Use of , and will automatically override the add mode and decimally correct answers will be printed.

Aug 18, 2010 | Sharp EL-1611P Calculator

### My printer won't print. It says wrong cartridge, but it is the same cartridge that has been in there and printed yesterday. The cartridge is full. What is wrong?

Hi,

• Reset the printer:-

• On the operator panel, press and hold the <ON/OFF> button for one second. (The display will go blank.)

Note: It may be necessary to unplug the power cord if pressing the ON/OFF button does not shut off the printer.

• Wait approximately ten seconds and then press the <ON/OFF> button again.

• Wait until the device has completed its cycling process before submitting another job request.
• Make sure the printer is powered on.
• Press the <Open> button (1), and then lift up the scanning unit (2).
The print head holder automatically moves to the center of the machine.
• Lift up the locking lever, and then remove the print head. The print head can be removed with the ink tank still inside.
• Replace the print head, and then press down on the locking lever.

• Close the scanner unit.
• When the LCD displays the following, press the <Set> button.

The machine will print a vertical line pattern.
• In column A on the printout, note which box has the most solid image. Note the value next to this box and use the [<] or [>] button on the operation panel to enter it. Then press the <Set> button.

Note: If you have difficulty on Column A when choosing between two patterns, use the larger value number.

• Repeat step 7 for columns B to F. If you have difficuly choosing between patterns for Columns D, E or F, use the smaller value number.
• When values for all vertical columns on the printout have been entered, the LCD will display [LAT LINE PATTERN] and a lateral (horizontal) pattern will print.
• Review the lateral pattern printout, noting which solid box in Column G on the printout has the most solid image.

• For the G column printed pattern, use the [<] or [>] button to scroll to the value with the most solid box in the column.

Note: If you have difficulty on Column G when choosing between two patterns, use the smaller value number.

• Press <Set> to select.
• Repeat steps 11 and 12 for Column H on the printout.

If the problem persists then you will need to take your device for repair, for possible Print head faulty
Thanks for using Fixya.
Good Luck and have a nice day.

Jun 10, 2010 | Canon MultiPASS F50 All-In-One InkJet...

### MP970 Photo All-In-One InkJet Printer: The printer head alignment is off. I have tried to...

1. Make sure that the machine is turned on, and then load three sheets of A4 or Letter-sized plain paper in the Rear Tray or Cassette.
2. Open the Paper Output Tray, and then open the Output Tray Extension. (1) Put your finger in the center of the top of the Paper Output Tray and open it gently. (2) Open the Output Tray Extension.
3. Press the Paper Feed Switch to select the paper source where you have loaded paper.
4. Print the print head alignment pattern. (A) Press the HOME button. (B) Select Settings , then press the OK button. (C) Select Maintenance , then press the OK button. (D) Select Manual head align , then press the OK button. (E) Select Yes , then press the OK button. (F) When " Did the patterns print correctly? " is displayed, confirm that the pattern is printed correctly, select Yes , then press the OK button.The input screen for the head position adjustment values is displayed.
5. Note:If you select Head alignment print, the machine exits the process after printing the current head position adjustment values.
6. Look at the first printout, and then adjust the print head position. (A) Check the printed patterns, and use the or button to input the number of the pattern in column A that has the least noticeable vertical streaks. (B) Repeat the same procedure until you finish i nputting the pattern number for columns B to F, then press the OK button. (C) Confirm the displayed message and press the OK button.
7. Note: If it is difficult to pick the best pattern, pick the setting that produces the least noticeable vertical white streaks.
8. Look at the second printout, and then adjust the print head position. (A) Check the printed patterns, and use the or button to input the number of the pattern in column G that has the least noticeable vertical streaks. (B) Repeat the same procedure until you finish inputting the pattern number for columns H to K, then press the OK button. For column K, the best pattern will be smooth and have no streaks in the border indicated by the arrow. (C) Confirm the displayed message and press the OK button.
9. Look at the third printout, and then adjust the print head position. Check the printed patterns, and use the or button to input the number of the pattern in columns L and M that has the least noticeable horizontal streaks, then press the OK button.

May 16, 2010 | Canon MP970 Photo All-In-One InkJet...

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