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# Ncr proof machine

How to install the repeat data feature

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Posted on Jul 25, 2013

Hi there,
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Posted on Jan 02, 2017

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### How do i install 7167 printer ncr

Welcome to Fixya

Connect the ccommunication cable to your computer. Connect the cash drawer cable to the printer and cash drawer. After all cable are connected, install the drivers disk that came with it. Please click here.

Thank you for using Fixya!

If you need further help, reach me via phone at https://www.6ya.com/expert/elixirjose_00375ea24bd8141b

Aug 09, 2011 | NCR 7167 Thermal Printer

### NCr + nCr-1 = n+1Cr prove it?

The identity (n+1)Cr=nCr+nC(r-1), valid if n>=1 and 1=0. These facts embody the construction of Pascal's triangle and let you prove by induction (on n) that nCr is always an integer since it's either 1 or it's the sum of two integers.

You can also think of the combinatorial definition of nCr, the number of r-subsets of an n-set. This is definitely an integer. Of course then you'd have to prove that the factorial expression for nCr is correct...

The nCr are binomial coefficients with the property that n+1Cr = nCr-1 + nCr (think of Pascal's Triangle) with nCn = 1 = nC0. Since 0C0 = 1 it follows that all nCr are integers

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

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### Hello my boot disk is crash now. so , had to

Maybe rescue the data by booting from a LIVECD like PUPPYLINUX and transfer all files to a working hard disc. then reinstall system.

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### A Committee has 19 members, of which 10 are Democrats and 9 are Republicans. A subcommittee is going to be formed with 3 Democrats and 3 Republicans. How many possible subcommittees can be formed?

How many ways can you select 3 members out of 9 republicans: nCr (9,3)
How many ways can you select 3 members out of 10 democrats: nCr(10,3)
For each single choice of 3 reps you have 1*nCr(10,3) possible subcommittees.
Hence the total number of possible suncommittes is nCr(9,3)*nCr(10,3)
Explictitly
# of possible subcommittees is [9!/(3!*6!)]*[10!/(3!*7!)] or 10080

To calculate you can use the explict formula above or use the nCr function of your calculator

To access the nCr( function press [2nd][5] (MATH) [7:Probability][3:nCr]

You can also just type the name of the command respecting the case ( C must be upper case)

Jan 31, 2010 | Texas Instruments TI-89 Calculator

### Need to add an NCR 7837 to an NCR 7875

i lost my scanner installation disk for model NCR-7837, how can i get it to install?

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### 7837 NCR barcode Scanner (RS232)

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### Running NCR on canon IR 8500

Hello Visionsp, NCR paper is special in so many ways (uhg).First of all is is typically thinner than regular 20# bond paper. Second,each sheet is chemically "married" to the other as there are ink beads on the back of one sheet that are activated by the unique beads on the face of the second sheet so to some degree they are manufactured to be mated together. So unless your paper feed system is @100% then the sheets (2 or 3 sheet NCR) are more difficult to seperate and are inclined to feed two sheets at once. THE BIGGIE is this. Consider the fact that in order to produce the carbon copy image that is being transferred from the top sheet to the pages below it requires pressure from from the pen. Your IR 8500 (and all modern copiers) has a section of the copier called the fuser.It uses extreme heat and pressure to bond the powdered carbon based toner to the paper by passing your normal copies between two heated and tightly gripped rollers, kinda like using an iron with extreme force. When the NCR paper passes through the fuser the exteme heat and "pressure" break the chemical ink beads on the NCR paper and begin to leave a layer of the very same chemical ink on the rollers as they pass thru.But instead of only trace amounts of carbon copy image (as would be reproduced by a customers signature on to the next sheet ) the entire NCR sheet is being heated and mashed and a large amount of the chemical ink is being activated rightat the point of maximum heat and pressure. Not only is this sticky as *&%\$ ,but it leaves a residue on the fuser rollers (since there is no paper to transfer the beads to) and the rollers build up with ......basically ink. So at some point the copies going through the fuser will rather wrap around the rollers or cause "accordion" jams because the telon coated rollers are no longer coated with non stick teflon but are coated with tacky gunk. The only workaround for this is to run small runs of the NCR paper at a time, then run regular white paper for a while which will remove the buildup and then another quick run of NCR and so on. I have worked on Canon,Toshiba,Ricoh,Savin and Kodak copiers.The results are the same.NCR paper is not designed for regular copiers as they all use the same type fuser system. A press or a RISOGRAGH are the only reliable systems to run NCR paper. I wish I had better news.NOTE: even the workaround I have provided,which can work, does not eliminate the possibility of ruining the fuser rollers beyond repair. good Luck...............SPINAL

Feb 09, 2008 | Office Equipment & Supplies

I have an Evolis Pebble 4 Printer. We use this machine to Print at leat 2000 cards a day.
We would like to know from where OEM Printheads for this machine can be procured as the
cost of the originals is too hgh?

Apr 18, 2007 | NCR 7167 Thermal Printer

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