What Flat panel is
A type of computer monitor that is very thin and flat-looking. In fact, it almost looks like it's just a screen (there's no bulky hardware behind it). It uses an LCD to display information, and there is less glare and radiation. It is not the same as a flat screen.
The meaning of Hardware
The electronic components, boards, peripherals, and computer equipment that make up a computer system (as opposed to the software, which tells these components what to do).