
Glossary
Touchscreen
The Touchscreen is a computer monitor developed and modified to recognize a touch on the screen surface. The user can move the cursor or select an option by touching the screen.
U
URL
Uniform Resource Locator is an address for a resource on the Internet. URLs are used by Web browsers to locate Internet resources. A URL specifies the protocol to be used in accessing the resource (such as http: for a World Wide Web page or ftp: for an FTP site), the name of the server on which the resource resides (such as //www.whitehouse.gov), and, optionally, the path to a resource (such as an HTML document or a file on that server).
USB
Acronym for universal serial bus. A serial bus with a data transfer rate of
12 megabits per second (Mbps) for connecting peripherals to a microcomputer. USB can connect up to 127 peripherals, such as external
User Interface
The
User program
Contains all instructions, declarations and signal processing data that can be used for system or a process control. It is assigned to a programmable module (for example, CPU, FM) and can be split into smaller blocks (modules).
V
VGA
Video Graphics Array. Industrial standard graphics adapter for use with any commonly used software.