Joseph Henry in about 1835. He is American and he made something called a relay.
        
             
        
        
        
Standing for an exceptional performance would be normal "acceptable" in both scenarios.
        
                    
             
        
        
        
The answer, im prettysure, is d. typeface.
hope this helps (:
        
                    
             
        
        
        
Answer:
//""Print results to screen""
Explanation:
In c,c++,java,javascript // is used for the single line comment.
syntax:- // comment.
Whatever text that is followed after // is commented means this line will not get executed by the compiler.
Comments are used to explain the code to other person who is working on the code or trying to understand that code.
 
        
             
        
        
        
Generally I'd recommend not buying one online, tends to be cheaper from a shop - and better used, although their are some risks with 2nd hand devices, I think the big price cut it worth it. 
If you did want to buy online, maybe Amazon or Ebay?