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Introduction
Computer is
an electronic that
can receive and
process data or
instruction very quickly
according to the
instruction provided by
the user and
generate the desire
output. There are
two main component
of the computer
these are computer
hardware, which refers
to the physical
parts that you
can touch and
see and touch
it like mouse,
keyboard, monitor, CPU
and printers. Another
is computer software
which are the
physical parts that
you can see
but you cannot
touch. These software
describe the program,
that are used
to operate the
computer system.
The computer
hardware devices can be categories
into four types
which are input
devices, processing devices,
storage devices and
output devices. The
input devices are
the devices which
are used to
enter data in
the computer example
mouse, keyboard, digital
camera and microphones.
Processing device
is the main
central device of
the computer system
that is used
to process data
which are displayed
on the monitor.
It is also
known as microprocessor. It is
the brain of
the computer because
it control all
functions on the
computer.
Storage devices
are the devices
which store data
permanently or temporary to
the internal or
external of the
computer. The examples
of external storage
devices are flash
disk, compact disk (CD)
and floppy disk
and the examples
of internal storage
devices are hard disk
and RAM Which
is a temporary
storage device.
Output devices
are the devices
of the computer
system which are
used to give
the display of
information in the
computer. The examples
of output devices
are monitors, printers,
speakers and projectors.
Taking care
your system and
a establish a
preventive maintenance routine
are critical to
ensure that you
have reliable system
that perform a
top efficient year
after year. The
only way to
prevent to caring
for your system
hardware. These include
all factors that
affects the system
as a whole.
Computer maintenance
it consist of
PC assembly, software
installation, troubleshooting, power
supply maintenance and
measuring.
Computer
background
Some of the theories
and ideas that would eventually come together to help make up the modern
computer were conceived back in the 19th century.
In the 1830s, Charles
babage (an English inventor) invented several mechanical
calculating machines. His analytical engine (although never actually built) was
designed to perform some of the tasks digital computer perform some to day e.g.
for instruction perform calculations and have permanent memory (punched cards
would have been used)
Had
it been built it would have been huge-covering an area about the size of a
football pitch.
In 1840s George Boole
devised a system of mathematics which becomes know as Boolean algebra. The
system used binary (True/false logical and is central to how computers made
decisions. By the end of century analogue computing appeared. Herman Hollerith
(a US inventor) patented a calculating machine. It used to punch cards and in
1890 it was used to compute census data.
It was during the 20th
century that the major developments leading to our modern computers took place.
In the first quarter of
the century Hollerith his tabulating machine company experienced several
mergers. In 1924 it was final absorbed into a company which adopted the name
international Business Machine corporation (IBM).
The Second World War
provided a huge stimulus to computer development. Howard Aiken (an American)
led the development of computer to decode messages from the German Enigma
machine.
Shortly
after the war the Americans built the ENIAC-the most sophisticated computer of
it time
In 1947 Bell
laboratories in the USA invented the transistor. A few years later the
microchip and microprocessor were invented. These could store and manipulate information
in a small space.
In 1974 micro
instrumentation telemetry systems in New Mexico release the Altair 8800-the
first personal computer.
In 1975 the Microsoft
Corporation was founded by William H. Gates 111 (bill Gates) and Paul Allen.
First version of the BASIC programming language for the MITS Altair. They moved
Microsoft to a suburb of their home town of Seattle, Washington in 1979. Two
years later they took their first step in diversifying beyond programming
language when they released the original IBM PC. Microsoft went on to convince
other PC manufactures to license MD-DOS, which made it the defector software
standard for PCs.
Microsoft moved into
application software, eg.word and excel and extended beyond the PC In 1984 they
began to produce application software for the Apple Macintosh. The 1970s and early 1980s saw the
development of ARPA net a long distance computer
network developed by
the US Government’s Advanced Research Project Agency and its evolution into the
first stage of four computers, another 200 in military and research
Establishments
throughout the USA were linked using this network during the 1980 several
academic networks had been setup.
The combined with the
ARPA net to form the internet. Computers
become progressively smaller, better and cheaper in the 1980s, and by 1992 the
computer industry was fastest growing industry in the world.
1991 saw the end of collaboration between
Microsoft and IBM. IBM chose to pursue former joint venture with Microsoft on
the OS/2 operating system, while Microsoft chose to evolve its windows
operating system delivering window 3.1 in 1992. There was the farthest
development of the windows operating system through the 1990s and by the end of
the century Microsoft had cornered the lion’s share of the PC software market
with window, its desktop application and internet browsers. These computers in
a daily life the computer are used in a different are some of the including in
education department at home in industrials and in offices.
Some of the functions
as a follows:
Airline booking on-line
banking insurance claim processing are done using computers.
Money-Automatic Teller
machine (ATMs) or debit and credit cards use computers to records transaction.
Today there are different types of computer
such as;
Personal
computer, Laptop, Han-held devices, Palmtops and Minicomputer.
Among of this
types of computers in my report am going to deals with personal
computer
The purpose
of this is
apply back taught
into more practice
to work on
organization like UCC to be
an instructor/ Technical staff.
Also it enable
to develop my
skills and ability
that supports my
professionals studies eg. (Computer
Maintenance and repairing)
and prepare for
responsibilities for daily
work as technician.
Practical training enable
to have enough
experience and confidence
to work at
any organization or
to open your
owned company and expand
carrier. Not only
but also practical
training is very
important study of
computer technology whereby
it transfer theory
into practice and
that the way
help the student
to understand in deeply
about information technology,
also gives me
confidence on working
to different devices
of computers.
Practical training
is important study
of computer technology
whereby it transfer
theory into practice
and that is
the way of
helping student to
understand clear the
subject into both
sides (Theoretically &
practically).
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