The document summarizes important milestones in computer history from 1896 to 1996, including the development of tabulating machines, early computers like ENIAC that took up entire rooms, the introduction of commercial computers like UNIVAC and innovations like the internet, graphical user interfaces, personal computers and PDAs. It describes inventions and innovations that drove the evolution of computers from room-sized machines to portable personal devices.

1. Computer History and Developments
Submitted By:
Samara Iqbal
Class- 6B
Roll No- 35

2. Computer
Milestones in
History
• 1896
• Developed by Herman
Hollerith, the tabulating
machine read a sorted
data from punched
cards.
• Hollerith formed the
Tabulating Machine
Company, which later
became International
Business Machine
Corporation (IBM).

3. • 1942
• Built at Iowa State
University by
professor Jhon
Atanasoff and Clifford
Berry, the Atanasoff
Berry Computer
(ABC) weighed in at
750 .Ib. and had a
memory storage of
3,000 bits (0.4k)
This Photo by Unknown Author is licensed under CC BY-SA

4. • 1944
• The Mark I was
constructed by
Harvard’s Professor
Harvard Aiken.
• It stood 50 feet long
and 8 feet tall.

5. • 1946
• The ENIAC (Electronic
Numerical Integrator And
Computer) was the worlds
first electronic computer .
• It weighed 30 tons and
measured 50*30 feet.
• Since there was no software
to reprogram the computer, it
had to be rewired to perform
different functions.
This Photo by Unknown Author is licensed under CC BY-SA

6. • 1951
• The UNIVAC (punch
card technology) was
introduced by
Remington Rand.
• At over 40 systems
sold, it was the first
commercially
successful computer.
• It used magnetic tape
that stored 1MB of
data.

7. • 1969
• The internet, originally the
ARPAnet (Advanced Research
Projects Agency Network),
began as a military computer
network.

8. • 1976
• The CRAY I, the world’s first
electronic digital computer,
was a 75MHz, 64 bit
machine, the world’s fastest
processor at that time.
• That same year, the Apple
computer was designed by
Steve Waznaik and Steve
Jobs.
• Apple was the first to
incorporate a Graphical User
Interface and computer
mouse.

9. • 1978
• The age of PC’s (Personal
Computers) began.
• Many versions of desktop
computers were developed
by start-up and existing
companies all over the
world

10. • 1990
• Tim Berners-Lee
invented the
hypertext system
called the World
Wide Web (WWW)

11. • 1996
• PDA’s (Personal Digital Assistant) became available to
consumers.
• The first portable computing devices.

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