Early Ages
|
SN
|
Historical Milestone
|
Approximate Date
|
Resource for further study
|
|
1.
|
Carving notches on bones for counting purpose began around
|
30,000 to 20,000 BC
|
|
|
2.
|
Place value number systems started from
|
8500 BC
|
|
|
3.
|
Invention of Abacus, first known counting device
|
1000 to 500 BC
|
|
|
4.
|
Use of Zero and negative numbers started around
|
300 – 600 BC
|
|
Distant Past Inventions
|
SN
|
Historical Milestone
|
Approximate Date
|
Resource for further study
|
|
5.
|
The first self striking water clock
|
1434 AD
|
|
|
6.
|
Leonardo da Vinci’s mechanical calculator
|
1500
|
|
Seventh (17th) Century Developments
|
SN
|
Historical Milestone
|
Approximate Date
|
Resource for further study
|
|
7.
|
John Napier’s Bones
(A set of 11 rods carved with numbers used for simplifying multiplication purpose) |
1614
|
|
|
8.
|
William Oughtred’s Slide Rule
(A set of two or more rulers that slide upon other used for division and multiplications aids) |
1621
|
|
|
9.
|
Wilhemm Schickard’s mechanical calculator
|
1625
|
|
|
10.
|
Blaise Pascal’s Arithmetic Machine – La Pascaline
(A mechanical way of adding numbers by dialing wheels)
|
1640
|
|
|
11.
|
Gottfried von Leibniz’s Stepped Reckoner
(Improvement on Pascaline that could perform multiplications and divisions too)
|
1670
|
|
Eighteenth (18th ) Century Development
|
SN
|
Historical Milestone
|
Approximate Date
|
Resource for further study
|
|
12.
|
The first English Typewriter patent
|
1714
|
|
|
13.
|
Colmar’s Arithmometer
|
1785
|
|
Nineteenth (19th ) Century Development
|
SN
|
Historical Milestone
|
Approximate Date
|
Resource for further study
|
|
14.
|
Joseph Jacquard’s Punched Cards
(Used to automate weaving patterns in looms) |
1800
|
|
|
15.
|
Charles Babbage’s Difference Engine
|
1822
|
|
|
16.
|
The first American Typewriter patent
|
1829
|
|
|
17.
|
Charles Babbage’s Analytical Engine
|
1830
|
|
|
18.
|
George and Edward Scheutz’s Difference Engine
|
1834
|
|
|
19.
|
Samuel Morse’s Invention of electric telegraph
|
1837
|
|
|
20.
|
The first programmer Augusta suggested Binary Storage
|
1840
|
|
|
21.
|
George Bool’s Boolean Algebra
|
1847
|
|
|
22.
|
Sir Charles Wheatstone’s use of paper tape to store data
|
1857
|
|
|
23.
|
The first commercial typewriter
|
1867
|
|
|
24.
|
George Bernard Grant’s Difference Engine
|
1867
|
|
|
25.
|
Charles Pierce links Boolean Algebra to circuits based on switches
|
1886
|
|
|
26.
|
Dr. Herman Hollerith’s Tabulating Machine
|
1890
|
|
Twentieth (20th ) Century Development
|
SN
|
Historical Milestone
|
Approximate Date
|
Resource for further study
|
|
27.
|
John Ambrose Fleming’s invention of Vacuum Tubes
|
1900
|
|
|
28.
|
The first teleprinters
|
1902
|
|
|
29.
|
Lee de Forest’s invention of Triode
|
1906
|
|
|
30.
|
Patent for semiconductor transistor
|
1926
|
|
|
31.
|
The Dvorak keyboard
|
1936
|
|
|
32.
|
Alan Turing’s Turing Machine
|
1937
|
|
|
33.
|
John Vincent Atanasoft and Clifford Bery’s ABC Computer
(Special purpose electronic digital computer) |
1939
|
|
|
34.
|
Howard’s Kiken’s Harvard Mark I (IBM ASCC)
|
1939
|
|
|
35.
|
John von Neumann’s Stored Program Concept
|
1940
|
|
|
36.
|
Konr Zuse’s Z1, Z3 and Z4 computers
(All these computers destroyed on world war) |
1941
|
|
|
37.
|
Alan Turing and COLOSSUS developed Vacuum Tube technology
|
1943
|
|
|
38.
|
ENIAC
(The first general purpose electronic digital computer)
|
1943
|
|
|
39.
|
EDVAC
(The first stored program concept computer)
|
1944
|
|
|
40.
|
Aiken built Mark – I
|
1944
|
|
|
41.
|
The first computer bug
|
1944
|
|
|
42.
|
UNIVAC
(The first commercial computer)
|
1948
|
|
|
43.
|
The first assembler – Initial Orders
|
1949
|
|
|
44.
|
Wang’s Magnetic Core Memory
|
1949
|
|
|
45.
|
Hopper’s UNIVAC-I Compiler
|
1950
|
|
|
46.
|
G.W.A. Dummer conceives integrated circuits
|
1952
|
|
|
47.
|
FORTRAN was developed
|
1957
|
|
|
48.
|
Kibly & Noce developed first IC
|
1958
|
|
|
49.
|
COBOL developed
|
1959
|
|
|
50.
|
IBM System/360 mainframe computer
|
1960
|
|
|
51.
|
BASIC developed by Kemeny & Kurtz
|
1965
|
|
|
52.
|
First disk storage by IBM
|
1966
|
|
|
53.
|
Keyboard, Mouse and first GUI
|
1968
|
|
|
54.
|
First Static and Dynamic RAMs used
|
1970
|
|
|
55.
|
Hoff’s first Microprocessor – 4004
|
1971
|
|
|
56.
|
8 inch floppy disk appeared
|
1971
|
|
|
57.
|
8008 Microprocessor launched
|
1972
|
|
|
58.
|
5.25 inch Mini Floppy disk
|
1972
|
|
|
59.
|
Hard Disk Devices started
|
1973
|
|
|
60.
|
8080, 6800 microprocessors
|
1974
|
|
|
61.
|
Father of Micro Computers Roberts developed Altair 8800 microcomputer
|
1975
|
|
|
62.
|
Microsoft founded by Bill Gates and Paul Allen
|
1975
|
|
|
63.
|
Steven Jobs & Wozniak developed Apple I and Apple II microcomputers
|
1976
|
|
|
64.
|
Cray developed the Cray-I super computer
|
1976
|
|
|
65.
|
8086 microprocessor
|
1980
|
|
|
66.
|
First IBP PC with DOS
|
1981
|
|
|
67.
|
Microsoft Windows introduced
|
1985
|
|
|
68.
|
Intel’s 386 microprocessor
|
1985
|
|
|
69.
|
Intel 486 microprocessor
|
1989
|
|
|
70.
|
Intel’s Pentium (586)
|
1992
|
|
|
71.
|
Intel’s Pentium Pro (x86)
|
1996
|
|
|
72.
|
Pentium II
|
1997
|
|
|
73.
|
Pentium III
|
1999
|
|
|
74.
|
Pentium IV
|
2000
|
|
|
75.
|
Core 2 Duo
|
|
|
|
76.
|
Duo core processor
|
|
|
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