A system displaying a hysteresis loop such as a ferromagnet, is a device for storing memory?’ Explain the meaning of this statement.
Magnetization of a ferromagnet is not a single-valued function of magnetizing field. Its value for a particular field depends both on the field and also on the history of magnetization. In other words, the value of magnetization is a record of 'memory' of its cycle of magnetization. If information bits can be made to correspond to these cycles, the system with such a hysteresis loop can act as a device for storing information.
