TABLE OF CONTENTS Level: 3
Definition: A small electronic adapter unit used to convert ISDN lines to standard phone lines, or vice versa. (See also ISDN.)
Level: 2
Definition: Refers to information arranged in rows and columns, most typically in relational databases and spreadsheet software applications. Can also be used to refer to HTML tables used to organize information and page objects on a web page. (See also Flat-File Database, HTML, and Relational Database.)
Level: 1
Definition: Refers both to the piece of hardware that makes up the device and the operating system Microsoft has developed to run this type of device. A tablet PC is a personal computer with a screen that can be written on with a special pen and held like one might hold a clipboard. The pen can be used to click or select objects on the screen (including keys on a visual keyboard), and most tablet PCs also include software applications that can record handwriting and convert handwriting to text. Tablet PCs bring with them most of the same advantages and disadvantages found with traditional laptop computers. However, their predisposition to being untethered and carried around has been hampered by short battery life. Some laptop manufacturers have produced laptops that mimic tablet PCs by making it possible for the laptop screen to swivel around and fold flat (face up) on top of the keyboard. (See also Digital Ink.)
