The AMD 486 is a microprocessor that was introduced by Advanced Micro Devices in 1993. It was designed to be compatible with the popular Intel 486 processor, offering similar performance at a lower cost. The AMD 486 was widely used in personal computers during the mid-1990s and supported various operating systems, including MS-DOS and early versions of Windows. This processor featured a 32-bit architecture and was available in several clock speeds, ranging from 25 MHz to 133 MHz. The AMD 486 also included an integrated floating-point unit, which improved its ability to handle complex calculations. Its affordability and compatibility made it a popular choice for both manufacturers and consumers.