Mystery

What can it be?You tell me;

I've never seen the like

It clicks and clacks like old railroad tracks

Letters on buttons in rows 

Like the school's front steps

Metal sticks that fly, 

Black ribbon and a sliding lid. 

I asked Grandma and she says

The roller holds paper

I like this thing, don't you?

But what is it?
Oh me, oh my

I couldn't try to guess

Some sort of new computer?