I can help out your friend
When there's work going down
I can say a lot
Without making a soundI'm made up of parts
But they're hard to replace
I've improved all our lives
I've even been to spaceI'm all around you
In your daily life
If you guess my name
It'll be worth the strife
What am I? (Thanks to gstats for that last line :) ).
Ok lot of great ideas but none correct so I'll attempt to give a hint:
I'm not made up
Of circuits and wires
And I was around long before
The invention of tires