AVR-Chat

We really have several issues, here.

1) Language. Mido is obviously not an accomplished English speaker. In fact, his/her level 
of learning is very low.

2) Techical. Mido does not have even the basic technical background from which to ask 
useful questions.

3) Cultural. or at least education culture. A few years ago, I had a student in a Senior EE 
Lab; he was from Lebanon. He could not understand cause and effect in simple circuits. He 
knew Ohm's Law but simply could not apply it. The school he had gone to for his first two 
years simply emphasized rote learning and repeating of facts without comprehending 
application. This appears to be a common practice in technical schools throughout that 
part of the world. We may be experiencing some of that here.

For Mido, I suggest that you follow the suggestions about tutorials. They will be very hard 
to understand, given your limited knowledge of English. Instead, use this as a chance to 
improve your skills. 

Find someone else in your school; if it is a technical school, there MUST be some  one who 
can help. 

When you can get beyond "what is SRAM", we can help you more.

Very best wishes,
Jim Wagner
Oregon Research Electronics
Tangent, OR, USA