Definition : Equipment designed to project an image that is larger than the original on a surface (e.g., screen) to facilitate watching by a large number of people. Projectors usually consist of electric-powered equipment that includes a power supply, lights, lenses, controls (e.g., focus, brightness), and other attachments that permit the projection of images with the appropriate optical characteristics necessary for a particular use; some projectors may include as a component the screen intended for projection of the images. Dedicated projectors intended for video, cine (i.e., movies), photo and microscope slides, and/or for other particular purposes are available.
Da-Lite has been designing, manufacturing and marketing the most comprehensive line of projection screens in the world. Today, we offer our widest selection ever of proprietary projection screen fabrics and materials in our history. Whether you need a projection screen for a corporate boardroom or a residential media room, you will find what you are looking for on our website
For more than 28 years, Dell has empowered countries, communities, customers and people everywhere to use technology to realize their dreams. Customers trust us to deliver technology solutions that help them do and achieve more, whether they're at home, work, school or anywhere in their world. Learn more about our story, purpose and people behind our customer-centric approach.
AMD Update is a monthly e-newsletter dedicated to bringing to the ophthalmologist the latest and most useful clinical information and literature reviews on the management of AMD in a quick, easy to review format
There are 3 types of search. Please only use one option at a time.
1) Build a boolean search string.
Ensure that document matches include...
2) Search for a phrase:
3) Search on part of a word:
Information on how to use Search
There are 2 types of basic queries: Terms and Phrases.
A Term is a single word search.
A Phrase would wrap a string of words in quotes and find matches on the extact string.
Boolean Operators You can combine basic queries with Boolean operators to form a more complex query. Boolean operators define the relationships between Terms or Phrases. Our search supports the following Boolean operators: AND, "+", OR, NOT and "-". Please note that Boolean operators must be all uppercase.
AND example search: default AND document
This is the default operator. It will be used if there is no Boolean operator between two terms. For example:
default document is the same as default AND document. In this case both terms need to exist within a listing to find a match on that listing.The + character is synonymous with using AND.
OR example search: default OR document
In this case just one of the terms needs to exist within a listing to find a match on that listing.
NOT example search: default NOT "document type"
The NOT operator excludes documents that contain the term (or phrase) after NOT. So a listing match would have to include the word default but not the phrase "document type". The - character is synonymous with using NOT.
Wildcard/Prefix queries You can perform "wildcard" or "prefix" queries using the '*' operator. Whereas all of the previous search found exact matches on the whole term or phrase, a wildcard search will find partial matches.
example search: ehr*
This query will match all documents containing words beginning with the prefix 'ehr' like the word Ehrlichia.
