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Abacus
AbacusThe abacus, also called a counting frame, is a calculating tool that was in use centuries before the adoption of the written modern numeral system and is still widely used by merchants, traders and clerks in Asia, Africa, and elsewhere. -
The Analytical Engine
The Analytical Engine was a proposed mechanical general-purpose computer designed by English mathematician and computer pioneer Charles Babbage. 1871 -
Holes In Cards
A punched card, punch card, IBM card, or Hollerith card is a piece of stiff paper that contained either commands for controlling automated machinery or data for data processing applications. Both commands and data were represented by the presence or absence of holes in predefined positions.
Now obsolete as a recording medium, paper tapes constructed from punched cards were widely used throughout the 19th century for controllingtextile looms and in the late 19th and early 20th century for control -
Von Neumann Architecture
The von Neumann architecture, also known as the von Neumann model and Princeton architecture, is a computer architecture based on that described in 1945 by the mathematician and physicist The von Neumann architecture -
ENIAC
February 15, 1946, ENIAC was the first electronic general-purpose computer. It was Turing-complete, digital, and could solve "a large class of numerical problems" through reprogramming. -
UNIVAC
UNIVAC is the name of a line of electronic digital stored-program computers starting with the products of the Eckert-Mauchly Computer Corporation.June 14, 1951 -
First Electronic Spreadsheets
Spreadsheet1961,Electronic spreadsheets computerise the traditional layout of any tabulation or complex calculation done with pencil, paper and calculator. They therefore have great potential in aiding routine calculations which might be done by these means or with a small BASIC computer program. -
High-Level Programming Language
A programming language such as C,FORTRAN, or Pascal that enables a programmer to write programs that are more or less independent of a particular type of computer. Such languages are considered high-level because they are closer to human languages and further from machine languages. -
UNIX Operating System
Unix (trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&TUnix, developed in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others. -
The First PC
PCThe first personal computers, introduced in 1975, came as kits: The MITS Altair 8800, followed by the IMSAI 8080, an Altair clone. -
Altair
The MITS Altair 8800 is a microcomputer designed in 1975 based on the Intel 8080 CPU. -
Apple
AppleApple Inc. is an American multinational technology company headquartered in Cupertino, California, that designs, develops, and sells consumer electronics, computer software, and online services.April 1, 1976 -
Cray-1
Cray-1The Cray-1 was a supercomputer designed, manufactured and marketed by CrayResearch. The first Cray-1 system was installed at Los Alamos National Laboratory in 1976 and it went on to become one of the best known and most successful supercomputers in history. -
Macintosh
The Macintosh is a series of personal computers (PCs) designed, developed, and marketed by Apple Inc.January 24, 1984 -
Windows
WindowsWindows or win is an operating environment created by Microsoft that provides an interface, known as a Graphical User Interface (GUI), for computers. 20 November 1985.
