Software is the instructions that tell computers what to do. Unlike the physical parts of a computer (the keyboard, screen, and chips inside, which are called hardware), software is invisible: it's made of code, which is specially organized information.

Think of it this way: a computer without software is like a brain without thoughts or a kitchen without recipes. The hardware can exist, but it can't actually do anything useful. Software transforms that silent machinery into something that can play games, write stories, solve math problems, or video chat with your grandmother across the country.

Software comes in many forms. An app on your phone is software. The program you use to write school reports is software. Even the basic system that makes your computer turn on and display things on the screen is software (called an operating system). Video games, web browsers, and calculators are all software.

Creating software is called programming or coding. Programmers write detailed instructions in special languages that computers can understand, telling the machine exactly what to do in every situation: what to show on screen, how to respond when you click something, or how to save your work. Good software makes complicated tasks feel simple and natural.