What Application is

Used interchangeably with program and software, this is a general term for a program that performs specific tasks, such as word processing, database management, e-mail sending or retrieval, or Web browsing. Unlike system software, which maintains and organizes the computer system (such as the operating system), an app is an end-user program.

The meaning of Flat panel

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.