Information storage devices using magnetic domain wall movement and methods of operating the same

An information storage device comprising:

• a storage node including a plurality of magnetic domain regions, and magnetic domain walls arranged between the magnetic domain regions;
• a write unit configured to write information to a first magnetic domain region of the storage node;
• a read unit configured to read information from a second magnetic domain region of the storage node;
• a magnetic domain wall moving unit electrically connected to the storage node, the magnetic domain wall moving unit being configured to move the magnetic domain walls;
• a temporary storage unit electrically connected to the read unit, the temporary storage unit being configured to temporarily store information read by the read unit;
• and
• a write control unit electrically connected to the temporary storage unit and the write unit, the write control unit being configured to control current supplied to the write unit.