Conceptual Model
*PC software – to create applications, to store the master data set. *PDA software– to run applications, collect field data, transfer data back to the PC.
So, you have seen the hardware, but how does the software work?
These systems generally have two components:  PC software to create applications, to store the master data set
And (2)  PDA software – to run applications, collect field data, transfer data back to the PC.