Flash

English (en)

Flash 
Flash is an abbreviation for 
flash memory. A flash or flashing 
describes updating a chip's code 
(firmware). Flash memory is a 
long-life and non-volatile memory 
that erases data in units called 
blocks and rewrites data at the 
byte level. It can keep stored 
data and information even when 
the power is off. It can be 
electrically erased and 
reprogrammed.