No.
You don't need an SD card
You can download them to wii, and then copy to the SD card.
Yes, you can. If you have enough Wii points, you can download VC or WiiWare games. When you are about to download a game of any kind (VC or WiiWare) they will ask if you want to download it to the Wii System Memory, or an SD card. You must have an SD card inserted bfore downloading. After downloading it to the SD card, go to the SD card menu, and the game will be there. You can now play the game through the SD card menu.
I think you can download games on arcade town or some game download website
After downloading the games to your computer from Google Play, you can use the SD Card as an external drive in your computer. Plug the SD Card in and then you can drag and drop the programs you want from your hard drive to the SD card, that will copy the programs to the SD card and then they are at your disposal.
That's not how the DSi works - for one, code can't be executed from the SD card anyway. What you need to do is connect the DSi to the DSi store, and download the games there after you buy them.
To download photos on sd on an android, one has to change the storage location to sd card.
You need a SD card to be able to save any additional information for games. Therefore, most of the time and SD card is required. (When you buy a 3DS, it comes with a 2GB SD card) DS/3DS download play does not require an SD card
Download iTunes on a computer that has an SD card slot. Put music onto iTunes. plug the sd card in and drag the music onto it
To download photos to a another clean sd card, one must select the sd card as the storage.
You have to get an SD card, (you can find one at Best Buy along with the Micro SD card) and insert a Micro SD card in the SD card, then insert it inside the Dsi SD card slot and take a pic on SD card. take it out, insert it in your laptop and download the picture.
Download the file to your computer and then transfer it to your sd card, or download to your phone and transfer it. In order for it to be on the root and not the sd card itself, you have to make sure it's not in a subfolder. As soon as you open the sd card, you should be able to see the file.