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Sunbury Downs College. Welcome to. IT Applications & Software Development 2008. 1937 war is feared. The rush is on to develop an electric computer to calculate flight trajectories for gun shells and bombs. 1937 war is feared.

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Welcome to

Sunbury Downs College

Welcome to

IT Applications

&

Software Development

2008


Welcome to

1937 war is feared.

The rush is on to develop an electric computer to calculate flight trajectories for gun shells and bombs.


Welcome to

1937 war is feared.

The rush is on to develop an electric computer to calculate flight trajectories for gun shells and bombs.


Welcome to

1937 war is feared.

The rush is on to develop an electric computer to calculate flight trajectories for gun shells and bombs.


Welcome to

1937 war is feared.

The rush is on to develop an electric computer to calculate flight trajectories for gun shells and bombs.


Welcome to

1937 war is feared.

The rush is on to develop an electric computer to calculate flight trajectories for gun shells and bombs.


Welcome to

1937 war is feared.

The rush is on to develop an electric computer to calculate flight trajectories for gun shells and bombs.


Welcome to

1937 war is feared.

The rush is on to develop an electric computer to calculate flight trajectories for gun shells and bombs.


Welcome to

1937 war is feared.

The rush is on to develop an electric computer to calculate flight trajectories for gun shells and bombs.


Welcome to

1937 war is feared.

The rush is on to develop an electric computer to calculate flight trajectories for gun shells and bombs.


Welcome to

1937 war is feared.

The rush is on to develop an electric computer to calculate flight trajectories for gun shells and bombs.


Welcome to

1937 war is feared.

The rush is on to develop an electric computer to calculate flight trajectories for gun shells and bombs.

Why? It took the computers (female workers) three days to compute the trajectory of a shell that took 30 seconds to get to its target.


1944 1945
1944-1945

The first computers are working

  • ENIAC in the USA (Eckert & Mauchly)

  • Colossus in England (Alan Turing)

  • CSIRAC in Australia (CSIRO)

See it at Scienceworks!

ENIAC did the trajectory calculation in 5 seconds


Welcome to

Software –

program

Hardware

People

Ergonomic

workstation?

Healthy, safe

work environment?

ENIAC


Computers are simple
Computers are simple

Based on switches that control the flow of electricity – electrons to be precise.

  • Switch on – electricity flows

  • Switch off – no electricity flow

    On/off, yes/no, true/false, 1/0

    binary number system used

    off,on,on,off,off 6 = 00110

    on,on,off,on,on 27 = 11011

    This is machine code- what the computer understands



Welcome to

  • Assembly language

  • Some words eg ADD, SUB, MUL, DVD

  • Assembler converts to machine code

High level Programming languages

FORTRAN –scientific

equations

COBOL – businesswords

BASIC – general purpose

Easier to write instructions. Compiled (translated) into machine language

First DEO

Data entry operator


Welcome to
1952

“There may be a world market for five computers”

CEO of IBM


The transistor arrives
The transistor arrives!

Brattain, Bardeen, Shockley

1947 – production late 50s


Welcome to

An I.C.

Chips!

transistor

bus

switch



Joke joyce
Joke Joyce!

  • Shows how easily you can fool people

    Another example,


Computer ethics
Computer ethics

Don’t

  • use a computer to harm others

  • interfere with other people’s computer work

  • snoop around in other people’s files

  • use a computer to steal


Computer ethics1
Computer ethics

Don’t

  • use a computer to bear false witness

  • copy or use proprietary software you haven’t paid for

  • use other people’s computer resources without authorisation

  • take others’ intellectual output


Computer ethics2
Computer ethics

Do

  • think about the social consequences of the program you are writing or the system you are designing

  • Always ensure consideration and respect for your fellow humans


And re ai and robots
And re AI and robots

Asimov’s laws

  • A robot may not injure a human or, through inaction, allow a human to be harmed

  • A robot must obey the orders of humans except where they conflict with 1st law

  • A robot must protect its own existence so long as this doesn’t conflict with 1st and 2nd laws


Vce it
VCE IT

  • Robots, AI, big computers, desktops, laptops, palmtops, mobile phones are all parts of information systems

  • All require programs & applications to make them useful

  • These studies are about IS, applications and programming.

  • They’re challenging and great fun!


To the future
to the future

smart mobile phones  computers in a pocket

wearable computers

PDAs, phones, cameras in one package

smart clothes – wearing computers




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