History

History of Technology Timeline | Britannica

History of Technology Timeline | Britannica

  • 3.3 million years ago: The first tools
    The history of technology begins even before the beginning of our own species. Sharp flakes of stone used as knives and larger unshaped stones used as hammers and anvils have been uncovered at Lake Turkana in Kenya. The tools were made 3.3 million years ago and thus were likely used by an ancestor such as Australopithecus.
  • 1 million years ago: Fire
    When humanity first used fire is still not definitively known, but, like the first tools, it was probably invented by an ancestor of Homo sapiens. Evidence of burnt material can be found in caves used by Homo erectus beginning about 1 million (and maybe even 1.5 million) years ago.
  • 20,000 to 15,000 years ago: Neolithic Revolution
    During the Neolithic Period several key technologies arose together. Humans moved from getting their food
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History of Computers







This chapter is a brief summary of the history of Computers. It is supplemented by the two PBS documentaries video tapes “Inventing the Future”
And “The Paperback Computer”. The
chapter highlights some of the advances to look for in the documentaries.



In particular, when viewing the movies you should look for two things:

  • The progression in hardware representation of a bit of data:
    1. Vacuum Tubes (1950s) – one bit on the size of a thumb;
    2. Transistors (1950s and 1960s) – one bit on the size of a fingernail;
    3. Integrated Circuits (1960s and 70s) – thousands of bits on the size of a hand
    4. Silicon computer chips (1970s and on) – millions of bits on the size of a finger nail.

  • The progression of the ease of use of computers:
    1. Almost impossible to use except by very patient geniuses (1950s);
    2. Programmable by highly
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Computer History

Computer History


An Illustrated History of Computers

Part 1


___________________________________



John Kopplin © 2002


The first computers were people! That is, electronic computers
(and the earlier mechanical computers) were given this name because they
performed the work that had previously been assigned to people.
“Computer” was originally a job title: it was used to describe
those human beings (predominantly women) whose job it was to perform the
repetitive calculations required to
compute such things as navigational tables, tide charts, and planetary
positions for astronomical almanacs. Imagine you had a job where hour after
hour, day after day, you were to do nothing but compute multiplications.
Boredom would quickly set in, leading to carelessness, leading to mistakes. And
even on your best days you wouldn’t be producing answers very fast. Therefore,
inventors have been searching for hundreds of years

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history of technology | Summary & Facts

History of technology, the development over time of systematic techniques for making and doing things. The term technology, a combination of the Greek technē, “art, craft,” with logos, “word, speech,” meant in Greece a discourse on the arts, both fine and applied. When it first appeared in English in the 17th century, it was used to mean a discussion of the applied arts only, and gradually these “arts” themselves came to be the object of the designation. By the early 20th century, the term embraced a growing range of means, processes, and ideas in addition to tools and machines. By mid-century, technology was defined by such phrases as “the means or activity by which man seeks to change or manipulate his environment.” Even such broad definitions have been criticized by observers who point out the increasing difficulty of distinguishing between scientific inquiry and technological activity.

A

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Event-Driven Programming: Introduction, Tutorial, History

In late 2005, I was trying to learn event-driven programming. I searched
the Web for an explanation of the basic concepts of event-driven programming, but I
couldn’t find one. So I wrote one. I hope it will help you in your attempt to learn
event-driven programming.

You can download the paper HERE.

It is available in both PDF format and in Microsoft
Word format. I make it available in Microsoft Word format so that it will be
easy to translate or subset the document, complete with embedded
images.

This document is finalized and no longer being actively maintained, but if you wish
you can leave a review.


Creative Commons License
This work is licensed under a Creative Commons Attribution 2.5 License.

The Creative Commons Attribution License gives you permission to do
virtually anything you want with this work, including copying all or part of
it, distributing it, and making derived works (including translations)

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History of Computers – Long, Long Ago

History of Computers – Long, Long Ago

Definition of a Computer
Simplest definition of a computer: A device that processes input and generates
output

Key words:

  • Input
  • Output
  • Processes
  • Information

Modern Computers are electronic, complex, and interactive, but can be reduced
to simple input-output processing devices

 

History of Computers: 3000 BC to Present

History of Computers – Long, Long Ago
The Abacus

  • beads on rods to count and calculate
  • still widely used in Asia!

 

History of Computers – Way Back When
The Slide Rule 1630

  • based on Napier’s rules for logarithms
  • used until 1970s

 

 

History of Computers – 19th Century
Jacquard Loom

  • used metal cards with punched holes to guide weaving process
  • first stored program – metal cards
  • first computer manufacturing
  • still in use today!

 

 

Charles Babbage – 1792-1871
Difference Engine c.1822

  • huge calculator, never finished

Analytical Engine 1833

  • could store numbers
  • calculating “mill” used punched metal cards for instructions
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A Brief History of the Internet

A Brief History
of the Internet

As you might expect for a technology so expansive and ever-changing, it is impossible to credit the invention of the internet to a single person. The internet was the work of dozens of pioneering scientists, programmers and engineers who each developed new features and technologies that eventually merged to become the “information superhighway” we know today.

Long before the technology existed to actually build the internet, many scientists had already anticipated the existence of worldwide networks of information. Nikola Tesla toyed with the idea of a “world wireless system” in the early 1900s, and visionary thinkers like Paul Otlet and Vannevar Bush conceived of mechanized, searchable storage systems of books and media in the 1930s and 1940s. 

Still, the first practical schematics for the internet would not arrive until the early 1960s, when MIT’s J.C.R. Licklider popularized the idea of an “Intergalactic Network” of computers. Shortly thereafter, computer scientists developed

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