Thank you very much for your prompt reply, normally 78L05 has 3 pins, this SOIC-8 package has 8 pins, and there are three GNDs I guess these GNDs are all connected inside. So, it is the same three pin component in a different format right ?
And I forgot to include another component, I guess...
I searched it through the google etc. but couldn't find a damn clue in the internet. And also I tried the data bases of circuit simulators also, but no success. Please be kind enough to help me to identify these components, or any substitute components which can be used instead of these...