Expansion slots are for adding more capabilities to a system. The slots can be used for adding more memory, graphics capabilities, connector types or other special add-on features.
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This is the frequency that the cordless handset will work on. 900MHz are generally being replaced by 2.4MHz phones, as they are not as powerful and experience interference more easily than the 2.4MHz phones. There are some phones that continue to combine the two technologies. Generally, however, the higher the Hz, the farther and more clearly a phone signal will reach from its base.
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LCD projectors create images through a liquid crystal display and are the most modern form of projection equipment. Overhead projectors are older projectors for hard copy transparencies.
DLP, or Digital Light Processing projectors are of the same generation as LCD and offer high quality resolution and brightness.
CRT projectors are older technology and based on three color light projection.
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Speed-dial phones are able to store numbers and utilize shortcuts to dial them. Speed dial capacity refers to the quantity of numbers that the phone can remember.
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