Some great reasons to buy DM calculators
DM calculators ...
Compact size -
are small enough to easily fit in any shirt pocket or purse or school backpack
Extended battery life -
have low power requirements, a single CR2032 will last for many years
Full-sized capabilities -
have all of the mathematical functions and programming power of full-sized HP calculators
have an USB connection to save and load the complete state of the calculator including all programs and registers
Firmware update -
can be updated to the latest firmware release through the miniUSB connection
Why DM calculators are better than cell phone apps
Always ready to use -
no need to start an app
Battery level -
one single battery lasts for years!
No confilct with talking -
ever tried to use a calculator while talking on the phone?
No cell phone radiation -
safe to use for extended periods of time, even by children doing homework
physical calculator keys
provide better positive feedback than cell phone touch screen vibration feedback
The moral of the story
It is unwise to pay too much but it's worse to pay too little.
When you pay too much you lose a little money. That's all.
When you pay too little, you sometimes lose everything. Because the thing you bought was incapable of doing the thing it was bought to do.
Some people say you have to be a little crazy to buy an RPN calculator. Well, in that craziness we see genius and that's who we make the world's smallest programmable RPN calculators ever for.