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Heroes of ICT
 

Heroes of ICT

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Twelve notable IT people. Linus, Bill, Jeff, Larry, Charles, Google Guys, Ada, Blaise, Steve, Tim, Richard and Woz. Potted page on each and a link to copyright. Thats WHY we use lego pictures. ...

Twelve notable IT people. Linus, Bill, Jeff, Larry, Charles, Google Guys, Ada, Blaise, Steve, Tim, Richard and Woz. Potted page on each and a link to copyright. Thats WHY we use lego pictures. Pictures courtesy of Dunechaser

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  • If you use PGDN and PGUP then you can see all the slides. There is more information on using this teaching resource on the Notes Pages. Creative Commons License applies. You may use this resource for non-commercial purposes, but read the small print.
  • The first page found on Google when searching for “Teachers” “Resources” is not the site called www.teachers-resources.com. Its not the site that mentions the word “teachers” and the word “resources” the most number of times. (That was the way it worked before Google). Google uses a complex algorithm, but the top site is the site that is mentioned (or cited) most often by other sites. If your site on teachers resources is mentioned by thousands of other sites OR It is mentioned by sites that themselves have been mentioned a lot (eg www.bbc.co.uk) Then you go to the top of the list. So if my grannies web site was mentioned by 1000s of sites OR it was featured on www.bbc.co.uk and the top page of Amazon then my Grannies site would come out top of most Google searchs.
  • Notes: It varies, but Google actually takes about 3-9 months to look at every page on the web.
  • Actually I think Alan Turing is more amazing but we’rte not doing computer science today! How Google works: The first page found on Google when searching for “Teachers” “Resources” is not the site called www.teachers-resources.com. Its not the site that mentions the word “teachers” and the word “resources” the most number of times. (That was the way it worked before Google). Google uses a complex algorithm, but the top site is the site that is mentioned (or cited) most often by other sites. If your site on teachers resources is mentioned by thousands of other sites OR It is mentioned by sites that themselves have been mentioned a lot (eg www.bbc.co.uk) Then you go to the top of the list. So if my grannie’s web site was mentioned by 1000s of sites OR it was featured on www.bbc.co.uk and the top page of Amazon then my Grannies site would come out top of most Google searchs. Google has resisted allowing people to pay them to be top of the list (mostly).
  • Linus is Finnish. He still looks after Linux developments where his position is described as “Dictator for Life”. Creative Commons License applies.
  • The Gates family are rich but the family that own Wal-Mart (aka ASDA) are thought to be richer. These slides were created in Sept-Nov 2006 based on photos supplied by Dunechaser. Creative Commons License applies.
  • These slides were created in September 2006 based on photos supplied by Dunechaser. Creative Commons License applies.
  • These slides were created in Sept-Nov 2006 based on photos supplied by Dunechaser. Creative Commons License applies.
  • Charles resigned from being Lucasian Professor at Cambridge – that’s the same job that Stephen Hawking now has and Isaac Newton once had. Charles brain is on public view – search Google images… These slides were created in Sept-Nov 2006 based on photos supplied by Dunechaser. Creative Commons License applies.
  • These slides were created in Sep-Dec 2006 based on photos supplied by Dunechaser. Creative Commons License applies.
  • These slides were created in Sept-Nov 2006 based on photos supplied by Dunechaser. Creative Commons License applies.
  • These slides were created in September 2006 based on photos supplied by Dunechaser. Creative Commons License applies.
  • These slides were created in September 2006 based on photos supplied by Dunechaser. Creative Commons License applies.
  • The obvious way to use this slide is as a starter for lesson 1 of “8.2” These slides were created in September 2006 based on photos supplied by Dunechaser. Creative Commons License applies.
  • These slides were created in Sept-Nov 2006 based on photos supplied by Dunechaser. Creative Commons License applies.
  • These slides were created in September 2006 based on photos supplied by Dunechaser. Creative Commons License applies.
  • These slides were created in Sept - December 2006 based on photos supplied by Dunechaser. Creative Commons License applies.

Heroes of ICT Heroes of ICT Presentation Transcript

  • 1 2 3 4 5 6 7 8 9 10 11 12
  • Teaching ideas – No. 1 - Indexing
    • When students arrive you have the “ 12 heroes ” on the whiteboard. You ask them to sit in a line of chairs in Birthday order. January 1 st on one side through to Dec 31 st on the other. Comment on how long it takes them.
    • Give them each a piece of paper. Ask them to write their names on it and then pass the papers to their right. When asked you tell them to just “put the papers in their pocket”. You take the “extra” one and put it on the table.
    • Pick the guy on the Segway ( Jeff Bezos ). Tell them he started Amazon. Why did he call it Amazon? Because he wanted to be first in the search engine list. Students should work out how silly this was – but it shows how the search engines were so poor. Click on Google link on Bezo s page. Talk about how Google’s technology allowed the best Auction site to be first in the list. (Its got nothing to do with how many times a word is mentioned or meta-tags) … if you don’t know then there is a brief guide below in the “Notes”
    • Do the Register . To do this you ask them to arrange themselves in register order.
    • How many pages are there on the web? – Answer should be several billion
    • Pick on students until you have a random list of words … say porcupine, Ferrari, Bolivia and Copper. Ask them to guess how many hits you would get in Google. Accept any reasonable estimate.
    • Now see the next page …
    You can use these Lego figures as an interesting introduction to many subjects in ICT or Computing. One Suggestion is presented on the next two slides. Objective: 6th form students to understand how indexing and secondary indexing works (with respect to Relational databases).
  • Teaching ideas - Indexing (Cont.)
    • Ask them how long it would take Google to find this list : Answer should be a fraction of a second.
    • Ask them how many instructions a computer can do in a second? Answer should be around the order of a million. (Tell them about megaflops?)
    • Ask them how Google searches several billion pages using a computer that can only do a million number of things in a second ….. In less than a second.
    • Pause: They should work out that its because Google has already done the searches and it has stored away the results. Ask how it joins the four results together when you ask for porcupine, Ferrari, Bolivia & Copper?
    • Pause: They should work out that its because they have each of the lists in order.
    • So how does Google store everything it has in lots of different orders?
    • Ask them to call their names out in register order. That was quick! Now call your names out in birthday order….. Pause…….. Pick up the piece of paper on the desk and call out the name. If necessary get that person to call out the name on their piece of paper, the next person then calls out the name on their list and so on…. You should then get a complete list.
    • CLEVER HUH! Google only has to sort everything into order and then “pass a piece of paper” to a nearby record and keep the spare “piece of paper”. As long as it has the “head” of each list then it can keep billions of records in lots of different orders.
    • Lots of directions to go in …. An obvious one is to talk about binary search methods. Or you explain about pointers. Or you could explain about how hashing helps to pre sort things into a list or ….
    You can use these Lego figures as an interesting introduction to many subjects in ICT or Computing. One Suggestion is presented to the right and on the preceding page .
  • Teaching ideas – No. 2 - HTML
    • 8.2
    • When students arrive you have the “ 12 heroes ” on the whiteboard. You give them a brief guide as to who a few of them are. However the most amazing person here is NOT Bill Gates.
    • The most amazing “ICT” person is the man … the British man … who invented the World Wide Web. The Americans created the internet, but it was a Brit who created the first web page and devised HTML. Today you will create a first HTML web page….
    You can use these Lego figures as an interesting introduction to many subjects in ICT or Computing. One Suggestion is presented on this slide.
  • Linus Torvalds One of the first operating systems ever built was called Unix. Every computer in the world requires an operating system which traditionally takes a team of programmers to create and one company gets all the profits. If only one person could create an operating system and give it away then the rest of the world might join in and build more free software to run on this system. The system is called LINUX and its world famous logo is a penguin.
  • Bill Gates Bill left Harvard to set up a software business with his partner Paul Allen. The major breakthrough for Microsoft was when IBM agreed that MSDOS and MSBasic would be included with their first PC (in 1981). Microsoft abandoned its partnership with IBM after they both spent a fortune creating OS/2 (the operating system designed to replace MSDOS™). OS/2 was abandoned due to the success of Windows™. Bill Gates is one of the world’s richest people.
  • Jeff Bezos Jeff founded one of the most popular and commercial web sites (Amazon) to sell books on the world wide web . Amazon was a major success story of the “dot com boom” where it was thought that “clicks replaced bricks”. He graduated from Princeton. He is still the CEO. Amazon was called Amazon because at the time the top search engines listed sites in alphabetic order. After Google was invented this was no longer necessary.
  • Larry Wall Larry invented and devised Perl. Perl doesn’t stand for anything although there are various backronyms available. One of these relates to a biblical quote as Larry is a well qualified Christian and Linguist. The language Perl is useful for Linux environments. It differs from earlier languages in that it is designed to be efficient to write rather than efficient to run. The design of the language is based on taking the best from several other languages.
  • Charles Babbage Charles spent a fortune developing “Difference Engines” for calculating in the 1800’s. His early designs were built, however he devised with Ada , Countess of Lovelace, plans for an “Analytical Engine”. The British Government finally gave up paying for his engines to be built. The engine was built at the end of the twentieth century and the analytical engine showed itself to be an early mechanical computer. Charles Babbage also designed the cow catcher seen on the front of early American locomotives.
  • Blaise Pascal 1623-1662 Blaise was a famous French mathematician. He made important contributions to the early designs of mechanical calculators. These mechanical designs culminated in 1990 when Ada and Charles ’ design for an analytical engine was constructed. Like Ada, Blaise has a language named after him.
  • Larry Page & Sergey Brin Google was not the first internet search engine. Google differed from earlier engines because it was able to work out which page should be put first in a search result. Today Google controls a large proportion of the world wide web advertising. They have indexed billions of web pages, libraries of books and millions of research papers. BY: : 1840 1860 1880 1900 1920 1940 1960 1980 2000 2020 1820 1840 1860 1880 1900 1920 1940 1960 1980 2000 2020 1820
  • Ada (Countess of Lovelace) Ada King was the daughter of Lord Byron although she never met him. After hearing Charles Babbage talk about his work, she was volunteered to translate a description of his early calculators. During the translation she added various notes. These notes far extended Babbage’s work. She is jointly credited with designing the analytic engine. This engine was never built in her lifetime but was the first ever programmable computer. Ada died young after suffering from a gambling addiction. She has a language named after her.
  • Steve Jobs Steve Jobs left his job with Hewlett Packard and went into partnership with his school friend “ Woz ”. Steve sold his car and built twenty five Apple II’s which they sold locally. The Apple was the second microcomputer to be marketed (The first was the Altair which Bill Gates claimed to have built a Basic interpreter for). These computers were only possible because Motorola had decided to build the first microprocessor. Steve famously left Apple but he was asked to return and the company was transformed under his leadership.
  • Tim Berners Lee Tim was working at CERN a 25 km tunnel for accelerating sub atomic particles so you can split atoms. Tim devised a sub-set of the emerging printing standard called SGML to create a simple version for linking pages together using hypertext. He described how others could do it in the first ever web page. Sir Tim still heads the organisation which approves new standards for the world wide web. The organisation is known as W3C.
  • Steve Wozniak Steve created in 1975 a computer to impress the fellow members of his computer club. At that time there was only one microcomputer on the market (The Altair) Steve went into business with Steve Jobs to market the new computer which they called an Apple. They sold Woz’s calculator to raise part of the money. Woz later returned to university which he had to do under an assumed name. Unlike his gregarious partner , Woz avoids publicity and spends a lot of time doing works of philanthropy.
  • Richard Stallman Devised GNU. A wonderful acronym as you can ask what GNU stands for… an answer is available… but the question remains. GNU stands for “GNUs not UNIX”. Richard devised ideas that allowed people to publish their work for mutual benefit rather than profit. His project had a major success when Linux was completed.
  • Others … Grace Hopper invented the first computer language and became a Rear Admiral Alan Turing helps crack German enigma code in the 1940s. Tommy Flowers built the first British Computer in the 1940s. E.Codd (A Brit) invented the relational database in the 1960s. Martin Cooper invented the mobile phone in the 1970s. The first electronic computer was built by the Germans during WWII Alan Turing described imaginary computers in the 1930s IBM built the first PC Fortune spent avoiding a Y2K computer bug Phil Zimmermann publishes PGP (Pretty Good Privacy) GCHQ discover public key cryptography in 1975 (and tell no one) Wikopedia is started This presentation was created in 2006 and is inspired by the largely unsung heroes of the information age. The pictures are courtesy of “Dunechaser”, Flickr and the clever people who created the Creative Commons License. Slide 1 Who’s picture should be here, but isn’t is Alan Turing and Tommy Flowers. Google is started First Microprocessor