ITGS - 01

learnedmooseupvalleyΗλεκτρονική - Συσκευές

7 Νοε 2013 (πριν από 3 χρόνια και 8 μήνες)

70 εμφανίσεις

1

ITGS
-

01

Computer in human life (don’t) know:



Work network.



Leisure.



etc students


Computer: in human life

2

ITGS
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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

3

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

4

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: Sr
đ
an Vujasin,Andrea Vudrag

5

ITGS
-

01

Computer in human life (don’t) know:



Newspaper;



Weather forecast;



Heating town;



Transport;



Hotel



Restaurant

Computer: in human life

6

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

7

Computer

Black box

Inputs:



Mouse



Keyboard


…..

System unit

Outputs:



Monitor



Printer


…..


Input/output:



Floppy



Fax



CD/DVD R/W



USB (FLASH MEMORY, …)


…..

8

Computer

The same computer different
jobs.








Restaurant, Home, Hotel, Military,
Space, Newspaper, Industry…

Inputs:



Mouse



Keyboard


…..

System unit

Outputs:



Monitor



Printer


…..


9

Computer

The same computer different jobs.



Hardware the same


Software different (system, application, user)




10

Computer

The same computer different jobs.



General
-
Purpose Computer


Special
-
Purpose Computer

11

Computer technology

Electrical devices used in computers:


Electromechanical relay


Vacuum tube


Transistor;


Integrated circuit (IC)

12

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

13

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

14

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

15

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)



16

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

17

Intel vs Motorola

IBM PC:


which microprocessor



Motorola


Intel

18

ITGS
-

01

Server



Work & resources for other computer
over a network.



Application for multiply users.


Computer: Server, Workstation & PC

19

ITGS
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01

Mainframe



Mainframe computer


room
-
sized
computer.



today: (banks, airlines)



as refrigerator,



a million $



in a climate
-
controlled rooms

Computer: Mainframe & Supercomputer

20

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

21

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

22

ITGS
-

01

Mainframe



Timesharing = small part of time for
each user

Computer: Mainframe & Supercomputer

23

ITGS
-

01

Mainframe



weather forecasting



medical pictures



telephone network design



simulations (car crash, scientist,
engineer,...)


Computer: Mainframe & Supercomputer

24

ITGS
-

01

Mainframe (used)



weather forecasting



medical pictures



telephone network design



simulations (car crash, scientist,
engineer,...)


Computer: Mainframe & Supercomputer

25

ITGS
-

01

Supercomputer

superfast, superpowerful computers are
called supercomputers.

Computer: Mainframe & Supercomputer

26

ITGS


01

Workstation



Computer power



Interactive application



Scientific workstations

Computer: Server, Workstation & PC

27

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

28

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

29

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

30

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

31

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

32

ITGS
-

introduction

Computers in network share:



storage,



printers



processing power.


The Emergence of Networks
2

33

ITGS
-

introduction

Electronic mail (E
-
mail).

World Wide Web (WWW)



Web browser (navigable window)



Hypertext links


The Emergence of Networks
3

34

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

35

ITGS
-

introduction



Telecommunication and networking



Artificial intelligence



Entertainment



General problem solving

Applications: Computers in Action
2

36

ITGS


Hardware Basic

Computers perform only 4 functions:



Receiving input



Process information



Produce output



Store information


What computers do
1

37

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

38

ITGS


Hardware Basic

Memory:



Primary storage RAM



Secondary storage


What computers do
3

39

ITGS


Hardware Basic

Number Systems:

Number v.s digit



Decimal numbers



Binary numbers.



Conversion


Binary Number System
1

40

ITGS


Hardware Basic




Bits as Codes (ASCII)



Bits as Codes (number).



Bits as Instruction (programming)



Binary Number System
2

41

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

42

ITGS
-

introduction


Social & Ethical issues


The difficulty about persons who
owns information about you.



each group example.



each student one example


Who owns information?

43

ITGS
-

introduction


Social & Ethical issues


The difficulty about protecting High
-
tech crime.



each group example.



each student one example


High
-
tech crime?

44

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

45

ITGS
-

introduction


Social & Ethical issues


The risk of failure of computer
systems



communication problem.



billing errors



lost data



Failure of computer systems

46

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

47

ITGS
-

introduction

Put them in the correct order :


Start application



Programs



Application



Start button

Windows:
Jumbled the Words

48

Sources

Computer confluence