s/w that is embedded in a h/w device.
it is often provided on the flash ROMS or as a binary image file that can be uploaded onto exiting h/w by a user.
computer program in a ROM, EEPROM whose program may be modified by external h/w but not by application program.
flash disk -- popular form of the firmware
was originally coined to indicate a functional replacement for the h/w on a low cost u.processor
eg. media recorder, CDROM, BIOS
computer chips have code embedded on itself to run is firmware
Is a term sometimes used to denote the fixed, usaually rather small programs that internally control various electronic devices.
devices like camera, mobile phone, calculator contain firmware to enable the device basic operatio as well as implementing higher level function.
firmware is always involved with very basic low - level operations in a device.
while more complex firmware often employ flash memory to allow for updates
updating firmware means fixing bugs or adding features so usually involve loading a binary image file provided by the manufactured into the device.
No comments:
Post a Comment