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Lada Ada Byron, Countess of Lovelace, Is The First

Computers have evolved greatly over time from early mechanical devices to modern electronic computers. Some key developments include the earliest general purpose computers like Charles Babbage's Analytical Engine in the 1800s, the first programmable digital computer (Z3) in 1941, and the first general purpose electronic computers like ENIAC in the 1940s. Major advances continued in the mid-1900s including the first stored program computer (EDVAC) in 1949 and the first commercially available computer (UNIVAC I) in 1951. Personal computing began in the 1970s with the Altair 8800 kit computer and the Apple I and II, leading to the introduction of the IBM PC in 1981 and Macintosh in 1984, establishing

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87 views3 pages

Lada Ada Byron, Countess of Lovelace, Is The First

Computers have evolved greatly over time from early mechanical devices to modern electronic computers. Some key developments include the earliest general purpose computers like Charles Babbage's Analytical Engine in the 1800s, the first programmable digital computer (Z3) in 1941, and the first general purpose electronic computers like ENIAC in the 1940s. Major advances continued in the mid-1900s including the first stored program computer (EDVAC) in 1949 and the first commercially available computer (UNIVAC I) in 1951. Personal computing began in the 1970s with the Altair 8800 kit computer and the Apple I and II, leading to the introduction of the IBM PC in 1981 and Macintosh in 1984, establishing

Uploaded by

Charlie Enjambre Hernani
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOCX, PDF, TXT or read online on Scribd
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Computers

I.

Pre-historic Computers
7th
Cen.
1645
1694
1822

1837

1889

Slide Rule
Pascals
Calculator
Leibniz
Calculator
Difference
Engine
(Abandoned)
Babbages
Analytical
Engine
Punched-Card
Machine

By William Oughtred
By Blaise Pascal
Also known as the Step Reckoner; by Gottfried Liebniz

By Charles Babbage (Father of Modern Computer).


Lada Ada Byron, Countess of Lovelace, is the First
Programmer. (Lady Bug)
By Herman Holleriths company, ComputingTabulating-Recording Company, is forerunner of IBM.
IBM was founded by Charles Ranlett Flint through a
merger.

II. Early 20th Century Computers


1935

1939

1941

1942

1944

1945

Z1, First
Binary
Computer
Z2, First fullyfunctional
Electromechan
ical Computer
Z3, First fullyprogrammable
Digital
Computer

Kondrad Zuse

Atanasoff-Berry
Computer

By John Atanasoff and Cliffor Berry; first automatic


electronic digital computer. Solved Linear
Equations.

Mark I, First
General
Purpose
Electromechanical
Computer
ENIAC
(Electronic
Numerical
Integrator and
Computer)

Idea by Howard Aiken. Created by IBM; also known as


the Automatic Sequence Controlled Calculator (ASCC)

First true general-purpose Electronic Computer


by Presper Eckert and John Mauchly. No stored
program. Operated on decimal/base 10 numbers.

1949

1951

EDVAC
(Electronic
Discrete
Variable
Automatic
Computer)
EDSAC
(Electronic
Delay Storage
Automatic
Computer)
UNIVAC
(Universal
Automatic
Computer)
UNIVAC I

Von Neumann wrote EDVACs first draft. Created by


Presper Eckert and John Mauchly. First Stored
Program Computer.

Constructed by Maurice Wilkes. Solved Differential


Equations. Used Assembly Language.

First commercially available computer; was based on


EDVAC.
Giant Brain. Most successful electronic data
processor of its day.

III. Late 20th Century Computers


1954

IBM 650

1956

TX-0

1971

Kenbak-1

1972

HP-35
TV Typewriter

1973
Micral
1975

MITS Altair 8800

1976

Apple-1

1977

Apple II

1979

Atari Model 400


and 800
IBM PC

1981
1984

Osborne I
Epson HX-20
Macintosh

Magnetic Drum Calculator


First General Purpose, programmable computer built
with transistors.
First Personal Computer by John Blankerbaker using
medium-scale and small-scale IC
A fast, extremely accurate electronic slide rule.
Designed by Don Lancaster, provided the first display
of alphanumeric information on an ordinary television
set.
Earliest commercial, non-kit PC based on a
microprocessor (Intel 8008)
Based on Intels 8080. Bill Gates and Paul Allen
licensed BASIC as the software language for the Altair.
Designed by Steve Wozniak.
Instant success with its printed circuit motherboard,
switching power supply, keyboard, case assembly,
manual, game paddles, A/C power cord, and cassette
tape with the computer game Breakout.
400 as the game console and 800 as the home
computer.
Ran on 4.77 MHz Intel 8088 microprocessor and used
MS-DOS.
First portable computer.
First laptop-sized portable computer.
First successful mouse-driven computer with GUI;
based on Motorola 68000 microprocessor.

IV. 21st Century Computer

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