A broadcast designer is a person who helps create the look and feel of things we see on our TVs or other electronic devices, such as the news graphics, logos, and animations.
Imagine you are going to draw a picture. Before you start drawing, you think about what you want the picture to look like, what colors you should use, and what shapes you should make. This is just like what a broadcast designer does before they make something for TV.
They work with different TV shows, news stations, or other organizations to make sure their branding and graphics look good when they are shown on screens. They use special computer programs to make their designs, and they have to think about things like font size and color contrast to make sure it can be seen easily.
So, just like you when you draw a picture, a broadcast designer thinks about what they want their project to look like and then works to make it happen on TV screens.