This question is lying somewhere between electrical engineering and computer science, however I felt that this forum suited my question the best. I post this question because I feel that this kind of research is quite cumbersome if you don't look at the right places.
I want to mention that my question is not about buying goods, but rather where to search for information about the goods you want to buy, which I think is relevant to know for anyone who would like to build a smaller system on a chip. If there is a better forum for posting this question, please tell me.
I am planning to begin a project building a smaller system consisting of
1) 8-bit microprocessor
2) Some memory (speed is not relevant for my project)
2) Wireless communication unit (Wifi/Bluetooth)
3) Display (about a 2-3 square centimeters, only going to display some static images, and no advanced animations etc, resolution is not the big thing here).
I am not going to build every part of the system myself, and only the programming of the microprocessor will be the hard work from my side.
The thing is : want to make the power consumption of the system as small as possible (so that the battery last longer...), so my question is : How do I estimate the power consumption a system like this / where can i get that kind of information? Of course, the power consumption varies with what kind of components I am going to use, so what kinds of components suits best out of the energy saving perspective?
With the above specifications in mind, I express my first considerations about this below
Processor : The power consumption varies with the clock frequency and if you are giving it operations to perform, so what I am searching for is the average energy per clock cycle / average energy per operation.
Memory : What kind of memories are the most energy efficient?
Communication : Wifi / bluetooth best (read about Ericsson's new low power bluetooth technology, however I couldn't really conclude anything about the overall power consumption)
Display : What display's are the most energy efficient theese days? I have considered E-Ink displays as an effective alternative, but I'm not sure about this.
I am merely a beginner at this, so any input to the problem would be appreciated and if I am missing something here I would appreciate that kind of information aswell. Again, I am not asking for you to explicitly give me the answers to my problems, but where to effectively search for this kind of information. Of course some direct answer would not be wrong either.