Digital cameras can include features that are not found in film cameras, such as displaying an image on the camera's screen immediately after it is recorded, the capacity to take thousands of images on a single small memory device, the ability to record video with sound, the ability to edit images, and deletion of images allowing re-use of the storage they occupied.
The first true digital camera that recorded images as a computerized file was likely the Fuji DS-1P of 1988.
Many digital cameras can connect directly to a computer to transfer data: USB is now the most widely used method.
Other cameras use wireless connections.
Most digital cameras utilize some form of removable storage to store image data. These include Compact Flash, Memory Stick, Multimedia card, USB Flashdrive, Picture Card.
Batteries: Digital cameras have high power requirements, and over time have become increasingly smaller in size, which has resulted in an ongoing need to develop a battery small enough to fit in the camera and yet able to power it for a reasonable length of time.
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