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The
Systems
Life
Cycle
A
continuous
process
used
to
ensure
the
successful
development
of
a
system.
-Problem
definition:
Forms
the
basis
of
the
requirements
for
the
new
system.
There
must
be
a
problem
with
the
existing
system
for
a
new
one
to
be
developed.
-Feasibility
study:
The
aim
is
to
understand
the
problems
with
the
current
system
and
to
determine
whether
a
new
system
is
worth
it.…read more

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Categories
of
Software
Generic
Applications
Packages-Software
packages
that
have
a
range
of
everyday
functions
depending
on
their
purpose,
for
example
Word
Processors
and
Database
software.
Businesses
may
use
this
kind
of
software
for
Stock
Control,
Order
Processing
etc.
Utility
Software-"house-keeping"
software.
Designed
to
keep
the
system
running
as
smoothly
as
possible,
for
example
Disk
Defragmenters
and
Firewalls.
Custom
Written
Software-Produced
when
an
off-the-shelf
(generic)
package
is
unavailable
to
perform
all
the
functions
the
company
requires.…read more

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Bits,
Bytes,
and
Number
Systems
<3
<3
Units
of
storage:
·1
bit
-
a
single
1
or
0
·1
nibble
=
4
bits
·1
byte
=
8
bits
·1
Kilobyte
(Kb)
=
1024
bytes
(210)
·1
Megabyte
(Mb)
=
1024
Kb
=
1,048,576
bytes
(220)
·1
Gigabyte
(Gb)
=
1024
Mb
(230)
·1
Terabyte
(Tb)
=
1024
Gb
(240)
Text
representation:
· ASCII-An
8-bit
code.…read more

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Comments

Karolis

Why is there a huge chicken on the front page?

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