SECD machine

A SECD machine is a type of computer that some scientists use to help solve problems and answer questions. It is like a big calculator that works much faster than a regular calculator. It is special because it is designed to work on complex problems and use a type of programming language called Lambda Calculus. This language can express a lot of different kinds of operations, like adding and subtracting numbers, as well as more complicated movements in space. Scientists use it to figure out how to solve complex problems.