Android Debug Bridge (adb) is a versatile command-line tool that lets you communicate with a device (an emulator or a connected Android device). The adb command facilitates a variety of device actions, such as installing and debugging apps, and it provides access to a Unix shell that you can use to run a variety of commands on a device.
Yes, it's Command Prompt that you should manually type to execute the command. The commonly command that used to debug any Android device, are:
to check the connection between computer and phone also sometimes you need trusth the connection (you will prompt at phone screen)To reboot any Android device to recovery menu that could be use for reset purposes or install/update Android version through adb sideload or recommended update by choosing update menuAdd some code hereTo reboot any Android device to fastboot menu. When your device can boot in fastboot stage, you can install/update Android OS, Unlock Bootloader and moreThis command is use for force device in edl mode, this must be use when you can't update mobile device through fastboot mode. Commonly use for Mi device.There are many command for adb program, you can ask here or search by yourself with google