Casio MS-80TV Scientific Calculator "exch" Questions

...c3 keys? Is there an operating manual available or can I print one? The c1, c2, & c3 are for exchange rates. To set the c2 exchange rate press AC. Press the MODE M/EX button till EXCH appears ...

Casio DF-120TE I have the Casio DF-120TE calculator. At the top of the screen it says C1 EXCH and I am unable to input any numbers or other functions. How do I get out of this mode? I was not the last

Exchange rate How do i set the calculator to do exchange rates? For the MS-80TE and MS-100TV this suggestion works - with the MODE select the EXCH than hold down the SET button. on the screan SET EXCH

How do you use the Exch rate mode? I think I know How do you use the Exch rate mode? I think I know how to set it but I don't know how to use it? Thanks From CASIO FAQ: How do change the currency rate

Resetting the tax rate How do I reset the tax rate? Hold "set" key until "set exch" appears. Then hit "tax+" key and enter in correct amount. After amount set then hit "set" key once again to complete

...i los the manual, i want to change the tax, now i have 5% Press and hold SET until screen has SET EXCH along the top. Press TAX+ (this will show existing tax rate) enter new tax rate then press SET ...