This document provides a brief history of major computers and developments in computing technology from the 1930s to the 1990s. It describes some of the earliest computers like the Z1, ABC, MARK 1, and ENIAC. It then covers the development of stored-program computers, the transistor computer, UNIVAC, IBM 701, and FORTRAN programming language. Later sections discuss personal computers like the Altair, Apple, TRS-80, Commodore Pet, Osborne, Amiga 1000, and use of the Amiga for video editing with the Video Toaster. The document traces the evolution of computing from early mechanical calculators and vacuum tube machines to transistor-based computers and the rise of personal computing.