Thanks,

This will work in RPN mode right off the stack. That's how I'm using it. As a random example, say I need to know the binary values of the follow min terms so I can do a Kmap:

f(A,B,C,D)= sum of min terms(3,9,11,13)

I'll use the program (SIN key in my case) to go into decimal mode:

Note: "->" means next step ... or then

Note: I like to start with a Shift->Clear so I have a clean slate between problems.

Note: one can lock into User Mode by pressing Shift->User and then

Shift->User again which will make life easier in some cases,

but I'm not using that option in the example.
1)Shift->User->SIN

The "Choose Base" selection dialog presents itself

2) Press the number 3 key (or arrow to it and Enter)

Now the calculator has the decimal base as the default.

I enter my min terms:

ALPHA->#->3->Enter

ALPHA->#->9->Enter

ALPHA->#->11->Enter

ALPHA->#->13->Enter

Now we convert them all to binary:

1)Shift->User->SIN

The "Choose Base" selection dialog presents itself

2) Press the number 1 key (or arrow and Enter)

The stack will go from all "#" tagged numbers in decimal:

#3d

#9d

#11d

#13d

To all in binary:

#11b

#1001b

#1011b

#1101b

Now I can plug A'B'CD + AB'C'D + AB'CD + ABC'D into my Kmap and find the result of B'CD + AC'D as the simplest gate configuration to implement the circuit.

This helps me out a lot with homework and tests as I can quickly swap to/from any base with a large or small number of values to convert.

Hope this helps and please let me know if I'm not being clear on something. This is very similar to the way I would operate on the HP 48G. The main difference is the HP 48G would do this type of operation in a smaller number of key strokes. I hope they implement this in a Prime update as going to the Settings Menu is very cumbersome in my opinion and the Edit Integer screen makes mass conversions painful. My program still uses too many key strokes, but I'll take it over the alternatives.

*Edited: 17 Oct 2013, 2:15 p.m. *