WHAT IS FIRMWARE? AND WHAT IS KERNEL?
https://msslinux.blogspot.com/2020/07/what-is-firmware-and-what-is-kernel.html
Firmware is software that typically exists on a microchip device. Your PC's BIOS is one example.
The simple (Basic Input Output System, BIOS) program that runs every time you turn on your PC scans/communicates with your CPU, RAM, video card, hard drives,
floppy drives, USB controller, etc. Since the program is stored (and run) on a chip, it's called "firm"ware, whereas "soft"ware is loaded from
a flexible source (a hard drive) and typically run on a general purpose processor (your computer's CPU).
A kernel is a (mid-level) piece of software that interfaces between applications and the PC's hardware.
It's not as low-level as firmware (which often runs ON the hardware, itself); nor is it a high-level program like a user program (word processor,
spreadsheet app, browser, etc). Unlike firmware, the kernel is software, as it gets loaded into memory when a PC boots from
the hard drive (it's one of the first things to get loaded and executed).
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