John Cocke's discovery led to the development of which type of computers?

John Cocke's discovery is foundational to the development of RISC (Reduced Instruction Set Computer) architecture, which significantly simplified the instructions that a computer's processor needs to execute. This architecture focuses on a small, highly optimized instruction set, allowing for greater speed and efficiency in processing. The RISC design philosophy emphasizes the use of a limited number of instructions that can execute very quickly, which streamlines processing and enhances performance.

RISC architecture has played a crucial role in various computing environments, influencing the design of modern processors used in everything from servers to personal computing devices. Its efficiency in both power consumption and performance has made it a popular choice in many high-performance applications.

In contrast, the other options such as microcomputers, supercomputers, and personal computers refer to different classifications of computers based on size, performance, or intended use, but they do not specifically relate to Cocke's contributions in the context of reducing the complexity of instruction sets.