First of all I must say about smartphones. Increase memory in these devices will expand their functionality through the installation of various software, and also allow you to store much more data (music, photos, pictures, etc.). In smartphones, the memory card is often located directly under the battery. Access the slot for the expansion memory is either there under the battery or on the sides of the device. The grooves generally designated by symbols corresponding to the types of supported memory cards.
Other widely used devices that use memory cards are the devices photos and videos. These include digital cameras, video recorders, digital video cameras, etc. the Slots to accommodate memory cards are denoted in the same signs as in smartphones. But access to them is not complicated structurally.
There is a list of gadgets in which to expand memory with cards is not widespread, as they by the manufacturer already incorporated a sufficient amount of memory. These devices include MP3 players, photo frames, tablet computers, electronic books, etc. In these devices the slots for the cards are located on the sides.
Memory cards are widely used for expanding the RAM of personal computers running operating systems Windows Vista and 7. When it comes to laptops, slot for memory card located in the rear part, where is the keyboard. If we are talking about a full system units, we often have built in a special device - card readers, which are just for using memory cards. In older models with the old buildings, in order to use maps, you must use an external, not embedded card reader.