What is firmware code running in embedded system?

[smartshashi]

What is firmware code running in embedded system which uses microcontroller. Firmware code is stored in ROM? Is this ROM means Flash or EEROM memory on board? What is execution sequence of Firmware code?

 

[wek]

"firmware" is just a buzzword for software, in embedded systems. You can exchange both "...ware" freely.

JW

 

[svicent]

"Firmware" is software that is embedded in a system which uses microcontroller.
Firmware has traditionally been stored in ROM or EPROM, however cost and performance requirements have driven component vendors to adopt various replacements such as Flash and EEPROM.

 

[cybersan2002]

Have you ever wondered shashi ,why when you provide reset pin of AT89C51, code execution begins from location 0x0000 .Its bcoz of this firmware running on AT89C51 chip.Firmware is nothing but a startup code permanently stored on uC chip which runs before any of the user program.
In some chip you can reprogram this firmware also.
I hope this will help you
Bye

 

[nymphie]

The same as software, except it is executed from ROM, and does not disappear when the computer is turned off. Almost any software could be in ROM, except programs that modify themselves as they run.

The firmware is as mentioned in the earlier post a startup code which is executed before any user application runs. It can be on ROM or EEROm depending on the requirement.

 

[jhbbunch]

Firmware usually refers to the code provided by a company to run the hardware that company sells/provides. MS Office is software, not firmware, but the driver for Soundblaster could be called firmware,