How do you delete memory card from digital camera?

If you mean REMOVE memory card. The memory card is usually under a flap which when opened reveals the memory card, push the card as if pushing it in and it will release the card. Some times the batteries are also housed in the same compartment. If you mean erase (FORMAT) the card, this facility should be on one of the MENUs. Hope this has been of some use to you. Bugs