No.
No, a memory card reader is not required if your camera has a usb cable.
If the camera has a slot for the memory card, slide it in and they should automatically save there. If not you'll need a different method of saving.
well, pictures need to be stored SOMEWHERE on your camera, right? just like how our memories store information, memory cards store the pictures you take. a camera without a memory card is about as good as no camera at all.
Most digital camera's on the market nowadays need a internal memory card. These may come in various forms like compact flash, SD cards, Memory sticks, etc. You will need to find the brand and model to help you find out what kind of memory card you will need. Most digital camera's will tell you what kind of memory card it takes where you insert it on the camera. The store where you bought your camera from should carry memory cards and/or they should be able to advise you in what kind to get. These memory cards can be purchase online or at many electronic or department stores. Depending on your camera's mega-pixels you may need a larger memory card to hold more photos.
how do i put my memory card in the camera, it won't fit
Check your camera's manual. Your memory card may need to be formatted. CAUTION: do not do this to a card with photos already on it because formatting will erase anything on the card. Check that it is the correct type of memory card & that your camera's battery is charged. If all else fails go to a reputable camera shop (or the shop you bought the camera from) & ask for help.
The camera has about 50MB of internal memory and accepts SD/SDHC memory media
The memory card is what the digital files are stored on. If you have no memory card in your camera there is nowhere for the camera to store the files. It is like not putting a film in a film camera or trying to burn a CD with no CD inserted to the drive. No Some digital cameras have internal memory so you don't need a memory card. I figured this out 2 minutes before I saw this question.
It depends on the camera and the size of the memory card.
Your Nikon camera may display the message "this memory card cannot be used" if the memory card is not compatible with the camera, is damaged, or needs to be formatted.
The memory card is camera specific, however the camera itself is waterproof, and that includes the SD card slot. So any card which works with the slot will work with the camera.
This is relative to your camera's settings (specifically its resolution) as well as the amount of internal memory your camera has and the size of your memory card.