How do I replace the ink cartridge on my Casio H R 100TE calculator?

Here's a link to your ink roller. DataProducts Black Red Calculator Ink Roller R1427 Staples here's another link to see. ink cartridge for Casio HR 100TMPlus

I am not sure what you mean. You computer has a built in software calculator. If your calculator has a USB port and is designed to connect to a computer (the Casio HR-100TE does not seem to have hat capability), you can use it as a numeric keypad. It would have a key to make what you type on the calculator echo on some number handling application like Excel.

For Calculator Owners Manuals:
http://support.casio.com/en/manual/manuallist.php?cid=004

I get all of my stuff from Amazon. com. Sometimes Office Depot will have it, but you need to be SPECIFIC about which model you have

Already answered here: http://www.fixya.com/support/t292440-casio_jf_120er_euro_rate_set

I was able to order the part I needed at Americanperfit.com

Thanks

It is solar powred and will turn off by itself. Don't worry it doesn't cost anything.

1. Press [AC]
2. Hold [SET/%] key for about 2 seconds
3. Press [TAX+]
4. Input the tax rate
5. Press [SET/%]

Type 100 x 20%, and then hit the minus button

1. Remove the top gray lid of the calculator
2. Insert paper through the back side slot near the power charger
3. Turn the calculator on print
4. Press FEED a couple times