Firmware may be a small piece of software that creates hardware work as its manufacturer intended it to. It consists of programs written by software developers to form hardware devices "tick." Without firmware, most of the electronic devices we use daily wouldn't be ready to work. they might not do anything.
For example, did you recognize that an easy traffic signal has firmware on it? Yes, it does, and therefore the firmware is what tells it to vary the lights at regular intervals. Without firmware, the traffic signal would be just a "stupid" mast, placed on the side of the road, doing nothing except looking bored. what's firmware within the case of less sophisticated hardware devices like traffic lights, washing machines, card machines, surveillance cameras, and TVs? The firmware is all the software on them, also acting as their OS and controlling everything about those devices’ functioning. Traffic lights need firmware to run.
We often tend to believe a hardware device is a tool that's just hardware. and that we assume that it just works by itself. However, almost none of the fashionable hardware devices would work without this particular software written directly onto them.
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