Storage Devices - Computer Fundamentals
Storage devices are divided into two types 1) Primary Memory 2) Secondary Memory
Primary memory (main memory): These types of memories are volatile memory. i.e. if the computer turn of the all the data & information written on RAM will be erased automatically.
RAM (Random Access Memory/Read-Write Memory) : It is a volatile memory after switch off the computer, every thing erase written in it.
Static RAM (SRAM)
: Data store in it never change until we change it or power off the computer.
Dynamic RAM (DRAM)
: Data store in it change or refresh after a specific time.
PROM : PROGRAMABLE ROM
EPROM : ERASABHLE PROGRAMABLE ROM
EEPROM : ELECTRICALLY ERASABHLE PROGRAMABLE ROM
Secondary memory (storage devices) : : These types of memories are non-volatile memory. i.e. if the computer turn of the all the data & information written on RAM will remain unchanged.
- Hard Disk (Local Disk)
- Floppy Disks
- Memory Cards
- Zip Drive
- Pen Drive
- External Hard Disk
- Blue Ray Disc