@Fassou:
Leaving aside the marketing typical of large companies, with their big ideas and larger budgets to squander, which will focus more on striking names, appropriate colors and specific typefaces, the first thing is to have a clear business plan.
There was an ad (I think it was from a bank), in which, when talking about self-employed individuals, they used as an example that their businesses usually had names that made their activity clear. In your case it would be "Computer Science …".
Then, you have to evaluate what your strengths and weaknesses are, and if the business is new and no one knows it, a good idea might be to name it after the street it is on, and that way everyone will know where the store is (eg: Computer Science Abetos, if it is on Abetos Street, or form a pack with the number it is on, Abetos14 Computer Science, etc...).
All of this are basic ideas, which can be adorned and overloaded as much as you want, and always thinking about a neighborhood business. But if your aspirations are much greater, and online sales or your positioning on the network predominates, then start by playing with a domain registrar, putting in short but easy-to-remember concepts, that you can associate with your business.
What a long-winded explanation 
Salu2!
What a long-winded explanation would be the name of the store and it looks great ;D