How did the microprocessor make small computers and electronic controls possible?

The microprocessor revolutionized electronics by consolidating the central processing unit of a computer onto a single integrated circuit chip. Before this innovation, computers were bulky, expensive machines used primarily for large-scale data processing.12

The development of large-scale integration (LSI) allowed engineers to pack thousands of components onto a tiny silicon chip, drastically reducing the size and cost of computing hardware. This shift enabled the creation of microcomputers—systems small enough to fit on a desk or inside a lunch box while retaining significant processing power.12

Because these chips were inexpensive and compact, they could be embedded into devices where electronic control was previously cost-prohibitive. This led to the widespread computerization of:2

• Industrial equipment: Such as robots and numerically controlled machinery.12
• Consumer products: Including microwave ovens, television sets, and electronic games.12
• Automotive systems: Improving performance and fuel economy through microprocessor-controlled ignition.12

Ultimately, the high-volume production of microprocessors, driven by Moore’s law, made personal computers and intelligent terminals accessible for everyday use.12