ELI5: Explain Like I'm 5

Intel BCD opcodes

Okay kiddo, so you know how computers use binary code which is made up of 1's and 0's to do things like add two numbers together or show a picture on your screen? BCD stands for "Binary Coded Decimal" which is a way of using binary code to represent numbers in base 10 like we humans do instead of in base 2 like computers do.

Now, when we want our computer to do something using BCD, we can use special instructions called "opcodes" that tell the computer what to do. Intel is a company that makes computer processors and they have their own set of BCD opcodes that do things like add two BCD numbers together or compare them to see which one is bigger.

So, these BCD opcodes are like little commands that our computer can understand to do math with numbers that are written in the same way we write them, like 0-9 instead of just 1's and 0's. It's pretty neat, huh?