Sabrina Donald November 26, 2012

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Sabrina Donald

November 26, 2012


The word ‘computer’ is an old word that has changed its meaning
several times in the last few centuries.


Originating
from the Latin, by the mid
-
17th century it meant
‘someone who computes’


Having to do with human activity it later changed to
“a
programmable electronic device that can store, retrieve, and process
data”
according to
webster

dictionary in 1980






Brief History

The first computer ….


The first computer was in 1936, the Z1 computer by
Konrad

Zuse

which was described as a the first freely programmable computer.


Following the Z1 was the John
Atanasoff

and Clifford Berry
computer called the ABC computer, first in computing biz but it
was not as easy as ABC. (1942)


BOTH OF THOSE WERENT AS POPULAR OR KNOWN


Known as the first computer was the Harvard Mark I Computer by
Howard Aiken and Grace Hopper, 1944


Known to the public as the first computer was the ENIAC 1
Computer …




ENIAC 1 computer was invented b John
Presper

Eckert and John
W.
Mauchly
.


Known as a WWII era computer


Its considered to be apart of the “First Generation” of computers.
(1951
-
1959) They are also known as commercial computers.


These computers were built using Vacuum tubs to store
information.


Vacuum Tubes generated a great deal of heat and was not very
reliable however the machines that used them require heavy duty air
conditioning and frequent maintenance

First Generation Computers…


Being the the ENIAC was considered to

be in the first
generation of computers the Transistor happened to be the
beginning to the second generation


The transistor was not a a computer, its creation allowed its
inventors William Shockley,

John Bardeen and Walter
Braittain

a Nobel Prize. The Transistor replaced the Vacuum Tube has
the main component in the hardware.


2
nd

Generation also witnessed
several important developments
at all levels of
computer

system design


1948

was the Manchester Baby computer and the
williams

tube (Frederic
Williams & Toms Kilburn)


Several years later,
1951

was the UNIVAC computer (John
Presper

Eckert and John W.
Mauchly
) This was a very important computer. This
is
because
it was the FIRST commercial computer and it was able to pick
presidential winners.


The 3
rd

Generation was characterized by
intergrated

circuits …


1969

ARPAnet
,
The
original Internet.


1970

Intel
1103 Computer
Memory
, The
world's first
available dynamic RAM chip.


Intergrated

Circuits are solid pieces of silicone that
contained the transistors, other components and their
connections
.


Gordon Moore noted that from the time of the
inventuon

of the IC the number of circuits that could be placed on
a
sinlge

intergrated

circuit was doubling each year this is
known as
Moores

Law.

Third Generation (1965
-
1971)


Large scale
interagration

chaacterizes

the 4
th

generation…


The 4th generation computers are marked by the usage of integrated
circuits and
microprocessors


computers
became smaller and smaller, and their prices became
lower and lower
.



Millions of components could be placed onto a single silicon chip.
Computers became more efficient and more reliable, and they could
perform more and more operations.


They
began to catch the eye of the general public, and soon more
sophisticated software and equipment were designed
.



Networks became commonplace, and the whole world was
connected by the Internet and by the World Wide Web.

4
th

generation computers …


The development of these computers has shaped technology
drastically.


Each year the development of technology became more and more
advanced


Currently we have Laptops, Personal Computers, Tablets and Smart
Phones.


Apple
inc.

Has drastically changed since its first MAC computer in
1984.




Presently …


A
smartphone

is a
mobile phone

built on a
mobile operating
system


the
first smartphones combined the functions of a
personal digital
assistant

(PDA) with a mobile phone.


Later
models added the functionality of
portable media players
,
low
-
end
compact

digital cameras
,
pocket video cameras
, and
GPS

navigation units to form one multi
-
use device
.


Tablet is described simply as a mobile computer with a
tuch

screen


More like a mini computer and a huge mobile phone


The future of modern technology


Examples being surface,
acer

tablet,
ebook
, kindle and
iPad

Tablets & Smart Phones …

Lets Review :

What was the FIRST computer

What was the name of the WWII computer?

Known as the FIRST computer.

Used Vacuum Tubes

Apart of first generation computers



What was the main component of the
UNIVAC computer?

All of the above

First computer

Howard Aiken & Grace Hopper Invention

First Generation computer

First commercial computer, able to pick presidential candidates

What have you learned?

Eniac

UNIVAC

Intergrated

Circuits


Z1
Computer


ARPAnet

Original internet

3
rd

Generation

John
Presper

1951

First Computer