ALTAIR
8800
VIDEO
TERMINAL
Video Interface.
Plugs into
the Altair
or
IMSAI
8800
bus and connects
to
standard TV
monitor
(or
modified receiver).
8 -bit input
connects
to almost
any keyboard Characters
are displayed
as 16 lines of 64
or 32 characters
each, In
a
7a9
dot
matrix.
(64
character line requires
a
high resolution
monitor or extensively
modified receiver.) The
character
set
Includes
128
upper and lower case ASCII
characters
and 64 graphics
characters for
plotting
a
48x128 or
64)
grid.
Characters are
stored
in
the onboard mem-
ory and
may
be
accessed directly
by the computer. The
output is
standard
525
line
EIA
RS170
video.
$160
Kit $230 Assem.
and tested
(Add
$25
for
64 character
option) deliv-
ery 30 days
Analog Interlace. This
board
Is a complete interlace
for
a CRT
graphics
display or an X -V plotter.
and
provides
8 channels of software -controlled
A/0 conversion
There are
1 or 2
channels of analog
output with
10 -bits
resolution (O.10v
or
±5v
out).
6-bits of
latched
digital output,
and 8
analog comparators.
1 channel
(0
-10v).
$135
Kit
$175 Assem.
and tested
2
channels
(0.10v)
$185
Kit
$235 Assem. and
tested
(Bipolar option (
±5v)
add $8 for t
ch.. $12 for
2) delivery
30 days
Micro
Computer.
A
one board computer
system
containing
an 8080 pro-
cessor. 512
bytes RAM.
space for 1 -3K
bytes PROM
or ROM,
and a serial
I/O
port
(optional). Compatible
with IMSAI
and Altair memory
and periph-
erals. Supports multiprocessing.
(Avail.
1st
O. 1976)
Microcomputer
System.
A
system
based on our microcomputer
and
video
boards, Includes
motherboard,
cabinet,
power
supply, and an
operating
system
and
monitor
on
PROM.
(Avail. 1st
O. 1976)
All prices
and
specifications subject
to change
without notice. Prices
are
USA
only
-
Calif. res.
add
6% sales tax.
POLYMORPHIC
SYSTEMS
P.O.
Box 2207.
Goleta,
California 93018
CIRCLE NO 44
ON FREE INFORMATION CARD
jf
awr
Advarce.
. .
I's
%/
s00Ne
R.
Rate
Higts
>10a
-Prot'
Dura
-High',
Arc
C
NIT1
*EFFICIENT ENGINE
PERFORMANCE
*REDUCED
MAINTENANCE
EXPENSE
*1
YEAR
GUARANTEE
OF PRODUCTS
For those
who
need
maximum firing
potential,
Labtronics
offers the Multiple
Restrike
Ignition.
The system produces
a high
energy repetitive
spark
on each
power
stroke
which insures the
greatest
statistical chance for
proper
ignition.
Dependable
system triggering from
breaker -
points, magnetic pick -ups
or the
extremely
accurate
'13A1
-xx'
infrared triggering
unit.
Order
your
system and enjoy the
economy and
peak
performance
of an
efficient engine.
LABTRONICS,
INCORPORATED
MULTIPLE RESTRIKE
SYSTEM
11 Model
VI Programmable
Duration
$79.95
II
Model
VI-11 Fixed
Burst
Duration
$59.95
I)
Model
VI -C Complete
Optical
System
$79.95
HIGH
ENERGY
SYSTEM (Single
Strike)
i
] Model
V Points Triggering
System
$29.95
U
Model V -C
Complete
Optical System $47.95
TRIGGERING
UNITS
] 13A1 -xx
Optical
Trigger
Unit $24.95
1) 61298
MagneticAmpliEler
$
4.95
CIRCLE NO
29 ON FREE
INFORMATION CARD
102
TOUCH
PLATE
Rt°
R2#
TO
AUDIO
AMPLIFIER
*
SEE
TEXT
LM30B
(Tor.)
Fig. d. D(nriped pereussi
(1'01'efo(I(i
appears at
filter
uirtprrf
wilco
toil
eA pl te
is
"st ri)
ek."
changing
R1 and R2. Of
course you
will have
to readjust
the pot to
obtain
the
best voice for
each
instrument.
Try
these
values for various
effects:
Instrument
Triangle
Small bell
Medium
bell
Large
bell
Drum
R1
and
R2
33K
47K
150K
470K
1M
A narrow
tuning
range
will help you
adjust the
circuit for
optimum
voicing,
so you will want to
use as small a value
for
the
pot as possible. If 100,000 isn't
enough, use values
of
up to 1M.
Incidentally,
you
can use various
op
amps in
this
circuit, but they may
not
respond
to a touch input
signal.
If
this
occurs, just connect
a
resistance
of a
few
thousand
ohms between the
posi-
tive power -supply
lead and
pin 2 of the
op amp
through
a
momentary
contact
spst
(normally
open)
pushbutton
switch.
Press
the
switch to
ring
the
bell, strike the drum,
or
whatever. For
a ding -dong
effect,
insert
a small
(about
0.001 -pF) capacitor
in place
of
the resistor. Pressing the
switch
gives
a sharp
"ding"
and
releasing it
gives a
resonant 'dong." This hookup makes
a great doorbell circuit!
Finally, if this introductory project
turns
you
on to electronic
music,
try
building a complete percussion
synthesizer
from
several
filters
ad-
justed to simulate various
instru-
ments. You
can even
build a
realistic
xylophone
by building
up a separate
filter
for
each
note.
SAVE!
MONEY
TIME
FREIGHT
QUALITY STEREO
EQUIPMENT
AT
LOWEST
PRICES.
I
YOUR REQUEST FOR QUOTA-
TION
RETURNED
SAME DAY.
FACTORY
SEALED CARTONS -
GUARANTEED
AND INSURED.
SAVE
ON NAME
BRANDS
LIKE:
A.D.C. KLH
A.R. SHURE
DYNACO
SONY
KOSS
FISHER
PIONEER
AND MORE
THAN 50 OTHERS
BUY
THE MODERN WAY
BY MAIL
-FROM
IIAOV
Department
217S
12
East
Delaware
Chicago, Illinois 60611
312 -664 -0020
CIRCLE NO
25 ON FREE INFORMATION
CARO
12 REASONS YOUR
CAR
NEEDS TIGER
CDI
Instant
starting
in
any
weather
- Eliminates
tune
-ups - Increases
gas mileage - Increases
horsepower
15%
-
Improves
acceleration
and performance
-
Spark plugs
last up
to
70,000
miles
- Reduces engine
maintenance
expense - Amplifies
spark
plug
voltage
to
45,000 volts
- Maintains
spark
plug
voltage
to 10,000 RPM
- Reduces
exhaust
emissions
- Dual
ignition
switch - An
Unconditional
LIFETIME
GUARANTEE
Installs
in
10 minutes on
any car with
12 volt negative
ground - No rewiring
- Most
powerful,
efficient and reliable
Solid
State
Ignition
made.
SATISFACTION
GUARANTEED
or money
back
TIGER 500 assembled
$53.95
TIGER
SST
assembled
$42.95
Post
Paid in
U.S.A.
Send check
or money order
with
order to:
IM Star Star
Corporatioln
P.
O. Box
1727
C
Grand
Junction,
Colorado 81501
DEALER
INQUIRIES
INVITED
CIRCLE NO.
55 ON FREE
INFORMATION
CARO
POPULAR ELECTRONICS
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