The development of the microprocessor led to the creation of:

Explanation: The invention of the microprocessor in the early 1970s made it possible to place the entire central processing unit (CPU) on a single integrated circuit. This technological breakthrough significantly reduced the size and cost of computers, leading to the development of personal computers (PCs) that could be used by individuals, schools, and businesses.

Key facts:

• First commercial microprocessor: Intel 4004 (1971).
• Mainframe computers existed long before microprocessors and used multiple circuit boards and processors.
• Personal computers such as the Altair 8800, Apple II, and IBM PC became possible because of microprocessor technology.
• Supercomputers evolved using advanced processor architectures, but they were not created as a direct result of the invention of the microprocessor in the context of computer generations.

Therefore, the correct answer is Personal computers.