What is RAM memory? and What is ROM?Who designed one is
temparary and another is permanent?why they designed like
that?By using far pointer which type data(whether
hexadecimal)we can access?
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Answer Posted / vignesh1998i
1) RAM (RANDOM ACCESS MEMORY) , ROM (READ ONLY MEMORY) are the two types of memory that computer uses ....
2) RAM is a primary memory , ROM is a secondary storage memory..
3) when ever we start our PC or Mobile or Lap top the ROM starts booting up and give the instructions to the OPERATING SYSTEM , then latter takes cares of ...... (TAT'S WHY WHEN EVER WE BUY A SYSTEM , OUR 'C' DRIVE WILL SHOW LESS MEMORY SPACE FREE , OUT OF THE TOTAL HARD DISK SPACE )
4) RAM Memory is also called Cache memory , since evey time processor cant access the secondary memory device for accessing the data ,since times increases ... so our data from external memory will be stored in the primary memory (RAM) , then only our processor will start accessing our data ......
4) In RAM if ones our data is processed it will be sent to the secondary storage devices like hard disk or pen drive or printer etc etc....... so RAM is called as re-writable memory.....
5) ROM is only used for reading the data from it... once it is programmed it cant be erased , only using UV rays it can be erased i think..........
the reason behind one making permanent and other is temperory is to reduce the time complexity for the processor as it is mentioned above in one of the points .......
every time processor cant access the 'a data' from the secondary memory , for this the processor has to halt other process till it access the info. from the other memory.....
remainig questions iam not sure for answering.....
thank u
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