1. Storage capacity of a computer
MEMORY
Storage capacity of a computer

2. Memory Type MEMORY PRIMARY RAM SECONDARY FLOPPY DISK HARD DISK CD DVD
FLASH DRIVE
BLUE RAY DISC
ROM

3. RAM INSIDE THE COMPUTER IT WORKS TILL THE TIME THE SYSTEM IS ON
CONTENT IS LOST WHEN THE POWER TURNS OFF – VOLATILE MEMORY.
READ/WRITE MEMORY SIMULTANEOUSLY.

4. ROM INFORMATION CAN BE READ ONLY.
THE CONTENT ARE STORED EVEN WHEN THE POWER IS TURNED OFF –NON VOLATILE
SPECIAL ROMS.
PROM-PROGRAMMABLE ROM
EPROM-ERASABLE PROM
EEPROM- ELECTRICALLY EPROM(USE ELECTRIC SIGNALS TO ERASE)

5. SECONDAY MEMORY PROGRAM ARE WRITTEN AND KEPT FOR FUTURE REFERENCING.
IT IS ALSO KNOW AS AUXILIARY MEMORY
NON –VOLATILE
THEY HAVE LARGER STORAGE CAPACITY.

6. Secondary Memory Magnetic Disc enclosed within a square plastic .
Floppy Disk
Hard Disk
Magnetic Disc enclosed within a square plastic .
Storing Data and can be transferred from one computer to another.
Storage capacity 5 1/2inch, 31/2 inch.
Disk made up of collection of disc known as platters.
Coated with Magnetic materials and each platters consists of invisible circles.
Storage capacity 320GB, 500GB, 1TB, 2TB