Siemens 620 appendix Dvd

Glossary

Diskette

The diskette (floppy disk) is an external data access memory on which all types of files and programs can be stored. The storage medium is a round magnetic disk in a plastic cover to protect it from getting scratched.

Display

Flat screen monitor of the PG.

Dormancy

An energy saving power management mode that shuts down the monitor and hard disk after all data found in the work memory have been saved to the hard disk (Save to Disk). The PG will then be shut down.

Double-Click

Pressing and releasing the left mouse button very quickly twice in succession with- out moving the mouse. This action is normally to open an object or program.

Drives

Devices for operating rotary disk media (diskettes, hard disk, CDs).

Drivers

These are programs which are part of the operating system. They adapt user program data to the specific formats required by I/O devices such as hard disk, printers, and monitors.

Drop-Down Menu

In graphics-supported programs, a menu line is positioned on the top edge of the screen. The menu titles contained in this line can be set either as drop-down or pull-down menus. Drop-down menus “roll” down as soon as the mouse pointer passes over a menu title. Pull-down menus only “roll” down when the menu title is clicked on. Different functions can then be called from these menus by moving the mouse and clicking on an item in a menu.

DVD

Digital Video Disc. A digital video disc can store greater amounts of data than a traditional CD. A standard single-layer, single-sided digital video disc can store 4.7 GB of data; a two-layer standard increases the single-sided disc capacity to 8.5 GB. Digital video discs can be double-sided with a maximum storage of 17 GB per disc. A digital video disc player is needed to read digital video discs; this player is equipped to read older optical storage technologies.

Glossary-6	SIMATIC Box PC 620 Manual
	A5E00131465-01