Beware not to buy HP Prime, if you are engineer!

[hewlpac]

Calculators such as the Prime are primarily for educational use. Engineering analysis of any significant complexity requires much more power an uses from finite element type analysis, DOE or mixture modeling, etc. Those tools require powerful computers... more power the better for speed and capability. Though the 48 - 50G series are nice in their day the prime can do much more ... just apply the appropriate engineering models for educational analysis (or fun if you enjoy it!)