- Some portable projectors allow a flash memory card (like the ones used in digital cameras) to hold a PowerPoint show on the card so that a laptop isn't needed to do a presentation.
- Some projectors now allow a "CAT-5" connection for networking the projector. The typical benefits are the ability to check lamp status, projector temperature (too hot usually means a clogged filter needs cleaning) and on/off controls.
- The ability to use a wireless network card, such as the type used in portable laptop computers, is beginning to be seen on projectors. This functionality allows the projector to be tied into a network, and be seen as a device, much like printer can be seen as a device on the network. The wireless portion also means no need for any of the cables mentioned above – the PC's signal is sent through another PCMCIA wireless network card, too!
- A few projectors use this slot to insert Compact Flash or Microdrives for playing back images without a laptop.
This is a very basic description about the common input types found on today's projectors. It serves as a ‘launching pad' to help in the education of the technology, and is not intended to be the final answer. After all, technology changes every minute!
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