Computer: in human life



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ITGS - 01

  • Computer in human life (don’t) know:
  • Work network.
  • Leisure.
  • etc students

ITGS - 01

  • Computer in human life (don’t) know:
  • Alarm clock digital wrist clock;
  • TV and radio;
  • CD/DVD & MP3 player;
  • Telephone;
  • Heating home.
  • Computer: in human life

ITGS - 01

  • Computer: in human life
  • I think that today could apsolutely be THE WORST DAY OF MY LIFE. Get this, last night i set my alarm clock to 6 45 am. I remember triple checking my alarm clock to make sure i wouldn't be late once again for school, just like i was late almost every single other day this week. When my mom walked into my room at 9 45 with a pan in her hand, threatening to beat me up if i didn't wake up right away, i jumped up and started yelling. I checked my alarm clock to check what the problem was, and it turned out that i set it to 6 45 pm. After screaming some more, i got dressed and begged my dad to drive me to school. When i got to school i realized that i had about half a ton of toothpaste tangled in my very frizzy and curly hair. And thanks to the rush i was in, i realized that i came to school in my bunny slippers that i walk around in the house with.
  • So, i got to school right on time for my lesson. I had a lot of work waiting for me, first i had finish designing the web page for our school, then i had to write an essay. To make my day even better, the minute i got in the computer lab i realized that EVERY SINGLE computer had a virus, and wasn't working. I started screaming some more.
  • Tijana Petrovic and Milana Marinkovic

ITGS - 01

  • Computer: in human life
  • Wake up: Alarm clock, mobile phone, radio, telephone
  • Morning news and temperature: TV, radio
  • Traffic jam: TV, radio, mobile phone
  • Cold morning: heating
  • Transport: computer in a car
  • Traffic jam: traffic lights
  • Parking place: company garage door
  • Entrance to the company building: key card
  • 45th floor: lift
  • Office: key card
  • Job: computer, mobile phone, printer, clock, telephone
  • Ground floor: lift
  • Transport: computer in a car
  • Lunch: telephone, credit cards
  • Resting: music, TV, DVD,CD player
  • Bowling: computer for rising pins
  • Paying the bill: credit cards
  • Playing games at home, Internet: PC
  • Authors: Srđan Vujasin,Andrea Vudrag

ITGS - 01

  • Computer in human life (don’t) know:
  • Newspaper;
  • Weather forecast;
  • Heating town;
  • Transport;
  • Hotel
  • Restaurant
  • Computer: in human life

ITGS - 01

  • Charles Babbage
  • Jacquard’s automated loom
  • Augusta Ada King, Countess of Lovelance, the dautgher of poet Lord Byron (first computer programmer)
  • Unfinished Analytic Engine
  • Computer: before

Computer

  • Black box
  • Inputs:
  • Mouse
  • Keyboard
  • …..
  • System unit
  • Outputs:
  • Monitor
  • Printer
  • …..
  • Input/output:
  • Floppy
  • Fax
  • CD/DVD R/W
  • USB (FLASH MEMORY, …)
  • …..

Computer

  • The same computer different jobs.
  • Restaurant, Home, Hotel, Military, Space, Newspaper, Industry…
  • Inputs:
  • Mouse
  • Keyboard
  • …..
  • System unit
  • Outputs:
  • Monitor
  • Printer
  • …..

Computer

  • The same computer different jobs.
  • Hardware the same
  • Software different (system, application, user)

Computer

  • The same computer different jobs.
  • General-Purpose Computer
  • Special-Purpose Computer

Computer technology

  • Electrical devices used in computers:
  • Electromechanical relay
  • Vacuum tube
  • Transistor;
  • Integrated circuit (IC)

Computer technology

  • The first computers, tube based, were: big, expensive, need staff, big place, …
  • New technology (silicon)
  • The transistor, invented in 1948.
  • The first used in computer 1956.
  • Computers with transistors were smaller, chipper, faster, reliable

Computer technology

  • Mark I 1944.
  • Electromechanical relay
  • Six times faster than a person
  • ENIAC (Electronic Numerical Integrator and Computer) two months after the end of war.
  • 18,000 vacuum tubes
  • UNIVAC
  • first general purpose commercial computer

Computer technology

  • 1956 – transistors were used in computers
  • mid 1960s new integrated circuits were used in computers
  • The first microprocessor was invented in 1971.
  • Silicon chip

Computer quality

  • Reliability (new devices can be test before
  • Size (new devices means smaller computer)
  • Speed (shorter distance, faster computer)
  • Efficiency (smaller devices, loss electrical power)
  • Cost (mass production chipper computer)

Gordon Moore

  • Gordon Moore the chairman of chipmaker Intel 1965
  • Prediction:
  • The power of a silicon chip of the same price would double about every 18 months

Intel vs Motorola

ITGS - 01

  • Server
  • Work & resources for other computer over a network.
  • Application for multiply users.
  • Computer: Server, Workstation & PC

ITGS - 01

  • Mainframe
  • Mainframe computer – room-sized computer.
  • today: (banks, airlines)
    • as refrigerator,
    • a million $
    • in a climate-controlled rooms
  • Computer: Mainframe & Supercomputer

ITGS - 01

  • Mainframe
  • Terminal = keyboard + screen + little local processing power
  • Terminal transfers information to ad from the computer.
  • Distance between M & T (same or another room or another country)
  • Computer: Mainframe & Supercomputer

ITGS - 01

  • Mainframe
  • Terminal = keyboard + screen + little local processing power
  • Terminal transfers information to ad from the computer.
  • Distance between M & T (same or another room or another country)
  • Computer: Mainframe & Supercomputer

ITGS - 01

  • Mainframe
  • Timesharing = small part of time for each user
  • Computer: Mainframe & Supercomputer

ITGS - 01

  • Mainframe
  • weather forecasting
  • medical pictures
  • telephone network design
  • simulations (car crash, scientist, engineer,...)
  • Computer: Mainframe & Supercomputer

ITGS - 01

  • Mainframe (used)
  • weather forecasting
  • medical pictures
  • telephone network design
  • simulations (car crash, scientist, engineer,...)
  • Computer: Mainframe & Supercomputer

ITGS - 01

  • Supercomputer
  • superfast, superpowerful computers are called supercomputers.
  • Computer: Mainframe & Supercomputer

ITGS – 01

  • Workstation
  • Computer power
  • Interactive application
  • Scientific workstations
  • Computer: Server, Workstation & PC

ITGS - introduction

  • PC: two meanings:
  • Personal computer – PC (IBM)
  • Personal computer – General-purpose single-user computer
  • PC – made by or compatible with IBM’s product.
  • Computer: Server, Workstation & PC

ITGS - introduction

  • Personal computer vs. desktop computer
  • Portable computer – laptop computer
  • Notebook computer (sometimes called laptop computer)
  • Laptop computer (computer on your lap while you work)
  • Subnotebook (extralight, ultramobile)
  • Expansion bay (one device can be inserted at a time.)
  • Computer: Portable 1

ITGS - introduction

  • Laptop vs. desktop computer
  • Docking station or port replicator (connect laptop to an external monitor, keyboard, mouse and disk drive).
  • Handheld computers
  • Personal Digital Assistants (PDAs).
  • Computer: Portable 2

ITGS - introduction

  • and computer (digital satellite receiver, wristwatch, toy, game machines, stereo, oven, air condition, digital video recorders DVR, car.
  • Programs of special purpose computers are part of computer and can’t be altered.
  • Firmware- a hybrid of hardware and software.
  • The Emergence of Net computer Embedded computer

ITGS - introduction

  • The invention of timesharing (1960s) allowed connection:
  • a mainframe computer
  • and individual terminals.
  • PC replaced terminal
  • Local area network (LAN).
  • Wide area network (WAN).
  • MAN
  • The Emergence of Networks

ITGS - introduction

  • Computers in network share:
  • storage,
  • printers
  • processing power.
  • The Emergence of Networks 2

ITGS - introduction

  • Electronic mail (E-mail).
  • World Wide Web (WWW)
  • Web browser (navigable window)
  • Hypertext links
  • The Emergence of Networks 3

ITGS - introduction

  • Word processing and desktop publishing
  • Spreadsheets and other number-crunching applications
  • Databases
  • Computer graphics and digital photos
  • Digital audio, digital video, and multimedia
  • Applications: computers in Action 1

ITGS - introduction

  • Telecommunication and networking
  • Artificial intelligence
  • Entertainment
  • General problem solving
  • Applications: Computers in Action 2

ITGS – Hardware Basic

  • Computers perform only 4 functions:
  • Receiving input
  • Process information
  • Produce output
  • Store information
  • What computers do 1

ITGS – Hardware Basic

  • Hardware components specialized in each of these 4 functions:
  • Input devices
  • Output devices
  • A microprocessor, Processor, CPU
  • Memory - Storage devices
  • What computers do 2

ITGS – Hardware Basic

  • What computers do 3

ITGS – Hardware Basic

  • Number Systems:
  • Number v.s digit
  • Decimal numbers
  • Binary numbers.
  • Conversion
  • Binary Number System 1

ITGS – Hardware Basic

  • Bits as Codes (ASCII)
  • Bits as Codes (number).
  • Bits as Instruction (programming)
  • Binary Number System 2

ITGS – Hardware Basic

  • Unique 8-bit code:
  • 256 unique characters
  • Unicode
  • A character set that uses 2 bytes 256*256=65636 = 64K distinct codes.
  • Double byte character set called UNICODE.
  • ASCII v.s Unicode 1

ITGS - introduction

  • Social & Ethical issues The difficulty about persons who owns information about you.
  • each group example.
  • each student one example
  • Who owns information?

ITGS - introduction

  • Social & Ethical issues The difficulty about protecting High-tech crime.
  • each group example.
  • each student one example
  • High-tech crime?

ITGS - introduction

  • Social & Ethical issues The difficulty of defining and protecting intellectual property in an all-digital age
  • Education CD by my group.
  • each student one example
  • Intellectual Property

ITGS - introduction

  • Social & Ethical issues The risk of failure of computer systems
  • communication problem.
  • billing errors
  • lost data
  • Failure of computer systems

ITGS - introduction

  • Social & Ethical issues The abuse of information as a tool of political and economic power
  • information-rich people and countries v.s information-poor.
  • The abuse of information

ITGS - introduction

  • Put them in the correct order : Start application
  • Programs
  • Application
  • Start button
  • Windows: Jumbled the Words

Sources

  • Computer confluence


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