The document traces the evolution of Intel microprocessors from 1971 to 1997, highlighting several major milestones. It describes the 4004 as Intel's first microprocessor in 1971. The 8080 became the central processing unit of the first personal computer, the Altair, in 1974. The 8086 and 8088, released in 1978 and 1979 respectively, established Intel in the personal computer market. Subsequent processors like the 286, 386, 486, and Pentium lines further increased processing power and capabilities.