3.3(Semiconductor memories)

>> volatile memory :- stores data till power supply is applied and looses all data when power supply is cut.

>> Non-volatile memory :- stores data wheather power supply is applied or not.

>>

> Primary memory Preprocessor se direct connect hota hai and Secondary memory indirectly

>Cache memory ko ese smj skte hain k paani pada hua hai and aapko vo pass krna hai and aap kood k pass ni kr skte to aap ek patthar rkh denge beech m  and uspe pair rkh k pass kr lenge. to cache memory bhi esai hi  kaam krta hai ye patthar cache memory hai it is fast and small in size. cache memory k ek side RAM hota hai and ek side Processor.

>All about Primary Memory and Secondary Memory.

RAM - Random-access memory ROM - Read-Only Memory SRAM - STATIC random-access memory DRAM - dynamic random-access memory PROM - Programmable read-only memory EPROM - erasable programmable read-only memory EEPROM - electrically erasable programmable read-only memory HDD - Hard Disk Drive FDD - Floppy Disk Drive CD - Compact Disc DVD - digital versatile disc BRD - blu ray disc HVD - Holographic Versatile Disc AUX - Auxiliary memory