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.
ITGS - 01 - 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 - 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
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 - Inputs:
- Mouse
- Keyboard
- …..
- 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
- …..
- 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
- 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
- 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.)
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).
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
ITGS – Hardware Basic - Hardware components specialized in each of these 4 functions:
- Input devices
- Output devices
- A microprocessor, Processor, CPU
- Memory - Storage devices
ITGS – Hardware Basic ITGS – Hardware Basic - Number Systems:
- Number v.s digit
- Decimal numbers
- Binary numbers.
- Conversion
ITGS – Hardware Basic - Bits as Codes (ASCII)
- Bits as Codes (number).
- Bits as Instruction (programming)
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.
ITGS - introduction - Social & Ethical issues The difficulty about persons who owns information about you.
- each group example.
- each student one example
ITGS - introduction - Social & Ethical issues The difficulty about protecting High-tech crime.
- each group example.
- each student one example
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
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.
ITGS - introduction - Put them in the correct order : Start application
- Programs
- Application
- Start button
- Windows: Jumbled the Words
Sources
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