The Stored-Program Concept is a fundamental principle in computer architecture where a computer's program instructions and data are stored in the same memory. This allows the computer to read and execute instructions directly from memory, enabling more complex and flexible operations. It was first proposed by John von Neumann, leading to the development of modern computing systems. This concept allows for easier programming and the ability to modify programs without changing the hardware. By storing instructions in memory, computers can perform a variety of tasks by simply loading different programs, making them versatile and efficient in processing information.