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CHALLENGER SPORT J95 User Manual Page 69

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Creative Computing
can
help you select
the
best
computer
and
get
the
most
out
of it.
With
so many
new
personal
com·
puters being announced and the prices
coming
down
so
rapidly,
isn'llhe
best
bet
to
wait
a year
or
so
10
buy
a
system?
We
think
not.
A
pundit
once
observed
thallhere
are
three
kinds
of
people
In
the
world:
1)
those
who
make
things
happen,
2)
those who watch things happen and
3)
those who wonder what happened.
Today,
it
is
those
who
are
getting
involved
with
microcomputers
who
are
making
things happen by learning
10
use
computers
effectively.
Furthermore,
il
is
nol
likely
thai
we
will see the same dramatic price declines
in
fulure
years
thai
have
already
taken
place.
Rather,
anewill
be
able
10
gel
more
capabllity
for the same price.
The T1-99/4 has
excellent
color
graphics
and
costs
$1150
Including
color
TV
monitor.
Which
system
is
for
you?
No
two
people have exactly the same
needs. You'll have
to
determine what
capabilities
are
important
10
you. Key
variables
include:
• Upper and lower case.
Obviously
vital
if
you are planning
to
do word pro-
cessing
or
anything
with
text
output.
• Graphics. Most
systems
have
graphics
but
the
resolution
varies
widely.
How
much
do
you really need?
•
Color.
Some
systems
are
B&W,
some have 4
colors,
others
up
to
256
colors.
Many
colors
sounds
nice, but
do
you really need
4,
or 16,
or
more?
• Mass storage. The smaller
systems
are cassette based; larger
systems
offer
floppy
disks
oreven hard
disks.
What size
data bases
do
you intend
to
use and is it
important
to
have high-speed random
access
toan
entire data base?
• Languages. Basic is standard but
increasingly
Pascal, Fortran,
Cobol
and
special purpose languages are being
offered.
• Audio, Speech, Music. Are these
features
important
for
your
planned
applications?
•
Applications
Software. Third party
software is widely available for
some
systems,
non-exlstenlfor
others. Do you
need
this,
orcan
you
write
your own?
Unblased,ln-depth
evatulUons.
At Creative
Computing,
we
obtain
new
systems as soon as they are announced.
We put them through their paces in
our
Soflware
Center and also in the environ-
ment
for
which
they are intended -
home, business,
or
schOOl. We
published
the
first
in-depth evaluations
of
the Texas
Instruments99/4,
Atari 800, TRS-80,
Ohio
Scientific
Challenger, Exidy Sorcerer,
Apple II
disk
system and Heath H-8. We
intend
to
continue
this
type
of
coverage,
not
only
of
systems,
but
peripherals and
soflwareas
well.
Sorting:
A Key Technique
W.hlle evaluations are
important,
the
main
focus
of
Creative
Computing
maga-
zine Is
computer
applications
of
all kinds.
Many
of
these require that
data
be re-
trieved
or
sorted. Unfortunately,
most
programming
texts
focus
on the
bubble
sort (or
straight
insertion)
and, very infre-
quently,
another
technique
(usually de-
layed replacement) and let It go at that.
Yet, except
for
comparison
counting,
the bubble sort is the least
efficient.
Tutorials and
articles
in Creative Com-
puting
demonstrate that the Sheil-Metz-
ner and Heapsort are from
50
to
13,000
times
as fast as the bubble
sorl!
Consider
a sort
of
100,000
Items
on a DEC System
10:
Bubble sort 7.1 days
Delayed reptacement 3.8 days
Heapsort 17.3
minutes
Shell-Metzner 15.0
minutes
Needless
to
say, on a
microcomputer,
a
bubble
sort
of
even 1000
items
is
agonizingly long.
Free
Sorting
and
ShuUllng
Reprint
Because
sorting
and
shuffling
(mixing
a
list
of
items) Is so vital in
most
program-
ming,
we are
making
available a 2O-page
reprint booklet on
Sorting,
Shuffling
and
File
Structures along
with
our
May 1979
issue which has several
artlcles"On-writing
user-oriented programs and making the
mosl
of
available
memory
space. The
reprint booklet and issue are free
with
12-issue
or
longer
subscriptions.
At
Creative
Computing,
we believe
that
computers
can be
of
benefit
to
virtually
every
intelligent
person In the
Free
reprint
booklet
and
Issue
wllh
a
new
sub-
scription
10
Creative
Com
pUling.
Contributing
editor
Ted
Nelson
(l)
Is
author
of
"Computer
Lib/Dream
Machines."
Publisher
David
Ahl
(R) Is a
pioneer
in
computer
models,
slmulallons
and games_
country.
We
do
not
believe that the
"Computer
priesthood"
should
confuse
and
bully
the
public.
As
Ted
Nelson
stated
in the
Computer
Lib
Pledge, we
do
not
treat any
question
as a
dumb
question,
since there is
no
such
thing.
We are
against
computer
terms
or
systems
that
are oppreSsive,
insulting
or
unkind,
and
weare
doing
thebesl
we can
to
improve
or
replace such
terminology
or
systems.
We
are
committed
to
doing
all we can
to
further
human
understanding
and make
computers
easy
to
understand, Inter-
active
wherever
possible,
and fun for the
user. The
complete
Computer
Lib
Pledge
is contained in
our
May 1979 issue
which
we are
furnishing
free
to
new
subscribers.
Computer
literacy
to
everyone
The Creative
Computing
Software
Division
is
participating
with
Children's
Television
Workshop
In an
Important
new
venture, Sesame Place. These theme
parks are being
designed
to
bring
inter-
active
computer
games and
simulations
to
young
children
(and
their
parents) and
remove the
mystique
of
computers
from
the youngest segment
of
our
population.
In
addition,
we are
participating
in
pro-
jects
with
several
school
systems
and
museums
to
write
reading
comprehen-
sion and
ecology
simulations
software.
We are also Involved
in a
major
college-
level
computer
literacy project.
As a
subscriber
to
Creative
Comput-
ing, you
will
benefit from all
of
these
activities.
Creative
Computing
is the
Number
1
software
and
applications
magazine.
Subscribe
today - 12 issues
for $15 ($9 saving over the
newsstand
price). Or, beat
Inflation
and get 36
issues
tor
just
$40. Money back
if
you're
not
satisfied.
Send payment
or
Visa, Master
Charge
or
American Express
number
to
:
Creative
Computing,
Attn:
Joyce
P.O. Box 789-M
Morristown,
NJ 07960
Save
time,
and call
your
order
toll-free
to:
800-631-8112
(In NJ call 201-540-0445)
cl'eatlve
computlnl1
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