TYPES OF MEMORY

TYPES OF MEMORY :- 

1. SEMICONDUCTOR MEMORY OR MAIN MEMORY :

                    The memory device comes in the form of chips made of silicon, which are semiconductor device.it is known as MOS (metal oxide semiconductor). It is microprocessor unit used as memory. 

                  There are different types of memories used in computer. 

 RANDOM ACCESS MEMORY (RAM) :-

            Ram is part of primary storage where data and program instructions are held temporarily while being manipulated or executed . This types of memory allows the user to enter data into memory (write) and then to retrieve it (read). 

             Ram is volatile, it depends on a steady supply of electricity to maintain data storage.when the power to computer is shut off, everything that was stored in ram is lost. 

READ ONLY MEMORY :-         

               

            As the name implies, read only memory (ROM) can only be read; data cannot be written into it. Rom may contain information on how to start the computer and even instructions to the entire operating system. Computer manufacturer usually sets the actual contents of ROM;they are permanent. Because the contents cannot be alter in way, and they are not lost when the electric current is turned off,  Rom in non-volatile.