It would say that the person read the message on the picture of the person. Example if you texted your friend at 7.00 and it said that the person read at 7.15. got it now?
I'm assuming hardware.
Remember, Hard = Physical.
If that's not it, try peripherals.
A molecule is the simplest unit of a compound.
Some sort of security pole to hold the 2 ends together firmly <span />
Answer: BUBBLE SORT
I hope I've been helpful to you.