Difference between EPROM and EEPROM

EPROM vs. EEPROM:

EPROM		EEPROM
EPROM stands for erasable programmable read only memory	1		EEPROM stands for electrically erasable programmable read only memory
Stored data can be erased by using ultra violet ray	2		Its data erased with higher voltages/ electrical signal.
All data stored in EPROM are erased when the user erased data	3		The case of EEPROM one can erase data of a fixed memory cell
The speed of EPROM which data can be read within 45 nsec to 90 nsec	4		The speed of EEPROM at which data can be read within 45 nsec to 200 nsec