You can do anything in scratch. How? In this project, I used costumes to simulate the function of transistors in a computer. In real computers, transistors are tiny switches that can be either "on" (1) or "off" (0). These switches work together to perform calculations, like adding numbers in binary (the system computers use, with only 0s and 1s). By switching between costumes, I could represent these "on" (1) and "off" (0) states in my Scratch project, mimicking the way transistors control the flow of information. For example, when adding two binary numbers, each costume can represent a bit (a 0 or 1), and by switching costumes, I can simulate the process of binary addition—just like how computers use transistors to add numbers and make decisions. This clever use of costumes allows me to simulate operations like binary addition, where I can "carry" values from one bit to the next, and do things that would otherwise be very difficult in Scratch. It's a creative way to bring real-world computer logic into Scratch, using simple blocks! I haven't made a working computer model using this yet. This is a demonstration. Thanks to penguin music on pixabay for the music.