Differenciate between RAM and ROM.

Following table shows the difference between RAM and ROM.

Options	RAM	ROM
Elaboration	Random Access Memory	Read Only memory
Accessibility	In reference with the processor, the information stored in the RAM is easily accessed	The processor cannot directly access the information that is stored in the ROM. In order to access the ROM information, first the information will be transferred into the RAM and then it gets executed by the processor
Working type	Both the read and write operations can be performed over the information that is stored in the RAM	The ROM memory only allows the user to read the information. User cannot make any changes to the information.
Storage	RAM memory is only used to store the temporary information.	ROM memory is used to store permanent information and cannot be deleted.
Speed	the accessing speed of RAM is faster, it assist the processor to boost up the speed	Speed is slower in comparison with RAM, ROM cannot boost up the processor speed
Data preserving	Electricity is needed in RAM to flow to preserving information	Electricity is not needed in ROM to flow to preserving information
structure	The RAM is an chip, which is in the rectangle form and is inserted over the mother board of the computer	ROMs are generally the optical drivers, which are made of magnetic tapes.
Cost	The price of RAMs are comparatively high	The price of ROMs are comparatively low
Chip size	Physically size of RAM chip is larger than ROM chip	Physically size of ROM chip is smaller than RAM chip.
Types	The RAM memory is categorized into two types they are the: Statistic RAM (SRAM) and Dynamic RAM (DRAM)	The ROM memory is categorized into three types, they are: PROM (Programmable Read Only memory), EPROM  (Erasable Programmable Read Only memory)  and EEPROM (Electrically Erasable Programmable Read Only memory)