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4-Technical Understanding

Review videos

Computer History

How Computers Work

(1) History of computers / graphic search engine

Answer the following questions using information from technology education websites or other online resources. Make certain that all information is in your own words. No credit can be given for information that is identical to that of another student or a web page.

  • Contributors to the development of the computer: Select five individuals who have made significant contributions to the development of the computer. List the contribution(s) of each individual and briefly describe its importance. See technology education websites. Use a graphic search engineto find pictures of each.





 1889: Herman Hollerith patented the Electric Tabulating Machine in 1889. This machine was basically used for 
  accounting purposes; storing numbers and such. 








                        
1944: Grace Hopper and Howard Aiken developed MARK I of the MARK series of computers in 1944 at        
  Harvard University. It was used by the U.S. Navy for calculations and weighed over 5 tons. Tons of data











 
 was able to be stored in this machine. It also carried out simple math equations and logarithms.  

















 1962: Steve Russell & MIT designed the first computer game ever. This game was created using a DEC digital     
 PDP-1.

 









 1964: Douglas Engelbart is the inventor of the infamous computer mouse! (Nicknamed that way because of the cord coming out of the back that looked like a tail.) The mouse is a device used by the computer user to control input into the computer. 





  • Computer Generations: Computer historians have classified computers into "generations" in an effort to identify the major technological advances upon which the computers are built. Briefly identify the major features of each of the first five generations of computers. See technology education websites. Use a graphic search engine to find pictures of each.

1. First Generation (1944-1959)


Vacuum Tubes were used as signal amplifies in these first generation computers




2. Second Generation (1960-1964)


The transistor is the main invention for this generation of computers. The transistor functions as a signal amplifier by working with and resisting 2-3 layers









3. Third Generation (1964-1975)

Invented by Jack Kilby in 1958, integrated Circuits or the IC-chip were what stood out in the third generations computers. Also, there was an advance in the computer's memory and its ability to open more than 1 application








4. Fourth Generation (1975-Present)



Very Large scale and Ultra Large scale IC-chips were introduced. Millions of information could fit onto these chips and saved power as well as reliability







5. Fifth Generation (now - future)



Fifth generation computer will work with and take commands from voice authority. Also, this computers will work with artificial intelligence. Parallel processing will soon be more powerful than central processing


(2) Computer knowledge

Teachers should be conversant with computer terminology and concepts that pertain to the use of technology in their classrooms.

  • Take the following online quiz. You can use any resources you like to answer the questions. Include a screen capture of your certificate showing your grade. You may take the quiz repeatedly if you like. Note: This test was generated at ProProfs.com . You will be given the opportunity to construct your own online quiz in the assignment on management.









(3) Computer profile

The market for personal computers is very competitive, and manufacturers are continually working to develop better and more powerful systems. Unfortunately, you can not determine how powerful a computer is by looking at the outside. It is necessary to look at the system profile to determine the type of processor, memory, hard drive capacity, etc. Compare the system profile of the computer used in class with your computer at home on the following properties. You may want to refer to eHow or your OS Help menu to determine how to find this information on your computer.

  • Compare the computer you use in the laboratory with the computer you use at home or work with respect to the following properties:
    • Processor: (a) name of processor; (b) number of processors; (c) processor speed
    • Memory: (a) how much RAM; (b) speed of the RAM (how many MHz)
    • Storage devices: (a) how many hard drives; (b) capacity of hard drives; (c) number and type of optical drives; type of hard drives (Firewire, USB, etc.)
    • Operating system: (a) OS; (b) service pack or version
    • Monitor(s): (a) resolution; (b) video card


School Computer

Processor: 3.06 GHz Intel Core 2 Duo 
Memory: 2GB 800 MHz DDR2 SD Ram




Home Computer

Processor: 2.5 GHz Intel Core i5
Memory: 4GB 1600 MHz DDR3
Storage Devices: 500 GB SATA Disk/Super Drive
Operating System: MAC OSX version 10.8
Monitor: 13.3 inch (1280x800)






(4) Navigating the Internet

A Uniform Resource Locator (URL) is the unique address which identifies a resource on the Internet for routing purposes. Know how to interpret URLs.

  • Use a web-based traceroute program to trace the route between your computer and and a website outside of the United States. Include a screen shot showing a map and the text of the specific route taken when contacting the website. Compare your findings with those of others in the class. Are websites always located in the country in which they are registered? What does this show about the nature of Internet-based business and commerce? Traceroute programs can be used to track and graph web traffic to specific sites.
Website Tracked: Publimetro- Chile


This shows that website and internet based businesses are not always located in the country that they represent. When the website deals with news and updates, it is not always necessary to have the server in the same country. It can be anywhere in the world. 


  • Compare the connection in the CSUN laboratory with your connection at home or school. What are the IP addresses of the computers you are working with? What kind of connections are your working with (dial-up, DSL, cable, 100-Base TX (twisted-pair LAN), 100-Base FX (fiber LAN), etc.)? Compare are your connection speeds.

Home Computer

I.P. Address: 10.0.1.10

Provider: AT&T Wireless

Speeds: 
36.03 Download Speed
4.21 Upload Speed




School Computer (CSUN)

I.P. Address: 130.166.109.172

Provider: Verizon

Speeds:
94.06 Download Speed
70.58 Upload Speed










  • Most schools have developed Acceptable Use Policies (AUP) and have installed filters to keep student focused on education. Include text (scan or download is easiest) of your school's AUP and a description of the filters in place. If a school AUP is not available, provide a sample AUP, cite its source, and provide a link. If your are not working in a school, summarize how filters work.


Cyber Safe Campaign: Acceptance Use Policy

How do filters work? Filters work by either "white listing" or "black listing" certain websites. 
The authority (School, Parents, etc) can choose which websites are black listed and which ones are white listed.
Key words can also be filtered if a students tries to search something inappropriate. 
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