Officially not, however it does support SDHC cards (tested up to 16Gb)
Assuming you mean the Canon Powershot A810 - It uses SDHC memory cards.
No
It depends on the model. Most digital still cameras will take SD or SDHC cards - these are also widely used in digital video cameras.
A SDHC Card Reader is used to read secure digital cards. Secure digital cards are used for recording data on digital cameras, GPS devices, phones and tablets.
The Transcend 16 GB SDHC is large, but you can also get 32 GB SDHC cards for your camera.
How many Pictures on a 8 gb sdhc with a 10 megapixel camera?
It's likely that your 4GB card is an "SDHC" card, and your camera is an older camera that was designed before the SDHC format came out. Although SDHC cards look exactly like standard SD cards, they are not. If your camera is a few years old, only SD cards of 2GB or less (standard SD cards) will work with your camera.But hang onto that 4GB card. One day you'll have a newer camera that will make good use of it.
SDHC has a greater storage capacity (over 2GB), hence it's name, 'High Capacity'. SDHC is better, but it is more expensive. Also, check that your camera supports SDHC (almost all of them do, but older ones don't.)
Nearly all new digital cameras use SDHC memory cards or some other form of flash memory cards.
secured digital high capacity
Some of the features of the Nikon s230 10MP Digital Camera is the 3x optical Zoom, 3 inch touch screen, Nikon's smart Portrait System, and Capture images to SD/SDHC memory cards.
SDHC memory cards are the advanced version of SD cards. Sd holds from 8 MB to 4GB of memory where as SDHC starts off at 4 GB and goes up. The data transfer rate is much higher with SDHC also but you have to make sure the digital camera accepts the card by looking in your manual before purchasing.