Siemens SIMATIC PANEL PC 877 - Manual (Page 279)

Glossary
SIMATIC Panel PC 877
Operating instructions, Release 07/2006, A5E00877780-01
Glossary-9
Windows
Microsoft Windows is a multitasking graphical user interface. Windows provides a standard
graphical interface based on drop-down menus, windowed regions on the screen, and allows
operation with a pointer device such as a mouse.
WLAN
Wireless LAN is a local network that transmits data via radio waves, infrared light or another
wireless technology. Wireless LAN is mainly used in connection with mobile computers in the
office or in factory environments.