the benefits to users are initially based on marketing, demonstrations and word-of-mouth. Once the technology is put into use, experience of actual benefits becomes the key motivator.

This study defines costs as the sum of:

* Technical cost: the price of the technology and the effort to install it
* Learning cost: the time taken to understand the technology
* Development cost: the effort to develop applications using the technology
* Test and debugging cost: the time taken to verify the system

The first

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