You have a microwave on which the LED clock has stopped working and you know how to work on computers, motherboards, and microprocessors. You need to find an Atmega microprocessor to repair the one that has gone bad. Atmega processors come in many different sizes and are used for many different applications. When you begin to replace the bad piece in the appliance, you realize you will need an Atmega board as well since the one you have has broken. Looking over your device, you realize you need something that can process 128 KB of data. An Atmega 128 offers that, plus it has a high number of I/O pins for you to connect, too. There are many different sizes of processors, so if you find yourself in need of a different amount of kilobytes, you can find multiple options easily. The reliable sellers on eBay offer a wide range of products for you to choose from to fit any project need you may have.