What is Non Volatile Memory?
| Categories of Memory |
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Memory chips are generally divided into two main groups known as volatile and non-volatile. Volatile (RAM) Volatile mem. or sometimes also known as Random Access Memory (or RAM) is mem. in which the information stored will not be retained once power is turned off. This group of mem. is usually used as a temporary scratch pad. The cost of production for such chips is relatively cheap and is often used to help increase a computer's processing speed. Examples of such memory are Dynamic Random Access Memory (DRAM) or Static RAM (SRAM). Non-volatile (ROM) Non-volatile mem. or also known as Read Only Memory (or ROM) retains information even after the power is turned off. They are usually used in small and hand-held devices like cellular phones and electronic pocket organizers / dictionaries whereby program codes or basic operating codes are stored permanently that require repeated usage. Examples of ROM are Erasable Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), Masked ROM and Flash Mem.. |
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