How much memory HP Prime

[brunokoch]

(04-20-2015 01:58 PM)Tim Wessman Wrote:  There are several issues you are running into here apart from the tips already stated.

1. The pdf conversion program you linked to does not use memory very well as it does not have access to use of direct png image files. This means every image gets converted into a very large "text" form. A 10kb image might end up being 100kb in the source code looking like "ICON 01245ABCDEF123..."
2. When you open/edit/send the source, it will be "compiled" into the code that gets executed on the device. The ICON items are converted into a non compressed bitmap format. Thus if you have 1 screen of image data, it will take up 320*240*16bits. This is roughly 150kb of data that stays around and doesn't go away.
3. So lets say you have 10 screens of data in your converted file. That is roughly 100kb*10 for the image data in the text form, then 150kb*10 when it arrives on the device and is compiled ready to run. Add on a bit for the program code to do the display/navigation and you have this: approximately 1mb for the original data file sent, and approximately 1.5mb for the program file when it is ready to run.

So what is happening here is that you will need roughly 2.5mb to receive the file, and run it. So you are seeing roughly 2-3 files send before you have "run out" of memory.

So what can you do? There is only really one possibility at the moment unfortunately - after each time you send 3-4 files you can restart the calculator to free up that memory used in each file (ON-SYMB together will cause it to reboot from the beginning). That would let you load up more then a few files. Note then each time you open/use them however it will consume that memory.

Such a great explanation! Thanks Tim. I have done what you said and it is working so far. I've searched others methods to convert PDF and image files but it is beyond my knowledge. Anyway, thanks again!