You know how when you write a story, you use words to make sentences, and sentences to make paragraphs, and paragraphs to make a whole story? Well, the computer also has its own language to understand what we want it to do. This language is called machine code, and it's made of numbers that the computer can understand.
But writing in machine code is really hard and confusing, because you just have to use a bunch of numbers that represent the different commands or actions the computer can do. So, people thought it would be easier to use words instead of numbers. This is where assembly language comes in.
Assembly language is a language where each word you write represents a specific action the computer can do. You would still need to translate it into machine code to make the computer understand, but it's much easier to write and read than machine code.
Typed assembly language is a type of assembly language where you have to specify the types of data you're using, like numbers or strings. This helps the computer catch mistakes that might happen if you use the wrong type of data in a certain command.
Think of it this way: Imagine you're building a tower with lego blocks. You need to make sure you're using the right size and shape of blocks, or your tower might fall down. Typed assembly language is like telling your friend exactly what type of blocks you need, so they can give you the right ones and you can build a strong tower.