Directed Electronics 4104A User Manual

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ICROC
PU-rER
DIGES-r
Volume
3,
Number 3
INTERSIL-AMS
MERGER
Intersil
Inc.
and
Advanced
Memory
Systems
Inc.
have
agreed
in
principle
to
merge
under
the
banner
of
Intersil,
Inc.
AMS:'
President
Orion
Hoch
will
be
the
new
Intersil
president
and
chief
executive.
The
merger
is
cited
by
several
industry
sources
as
an
excellent
move
with
each
compa-
ny
complementing
the
other.
AMS
is
a
system
house
with
a
good
cash
position
but
lacking
new
product
strength
whereas
Intersil
is
a
component
firm
lacking
the
needeq
financial
resources
to
market
its
new
prod~cts.
(Cont'~
on
page
2)
TRANSITRON
CLOSES
MICRO
DIVISION·
Transitron
has
dropped
its
16-bit,
6-chip
bipolar
microcomputer
family
and
closed
the
doors
of
its
microcomputer
division.
The
de-
cision
was
made
by
Dr.
David
Bakalar,
presi-
dent,
after
2~
years
and
$2
million
of
devel-
opment.
Repeated
delays
due
to
developmental
problems
in
both
microprocessor
·and
memory
bipolar
Schottky
process
are
said
to
be
the
reason
for
the
shutdown.
Twenty-three
of
the
27
division
employees
have
been
laid
off.
MMI
DROPS
JIC
SYSTEMS
&
4K
RAMs
Monolithic
Memories
Inc.
has:closed
its
year
old
Microcomputer
System
division
and
dropped
its
4K
dynamic
MaS
RAM.
The
decision
was
based,
according
to
an
in-
ternal
office
memo
to
employees,
on
IJmarket
conditions
which
made
the
early·
profitability
of
either
product
most
unlikely."
Up
to
40
employees
may
be
terminated
and
James
Moreton,
microcomputer
division
general
manager
and
Ken
Moyle,
corporate
vice-presi-
dent
of
MaS
operations,
are
expected
to
leave
the
firm.
(Cont'd
on
page
2)
September, 1976
CRASH-PROOF
UNIVERSAL
MC
SYSTEM
A
unique
dual-processor
prototyping
and
de-
velopment
system
for
microcomputer
applica-
tions
has
been
announced
by
Signetics.
Called
TWIN
(Test
Ware
INstrument),
the
dual
architec-
ture
is
the
first
to
offer
the
security
of
a
"crash
proof"
development
environment
and
an
"obsolete
proof"
capital
invenstment,
accord-
ing
to
the
firm.
In
competi
ti
ve
systems,
appli·cation
program
malfunctions
or
operator
errors
can
destory
or
radically
alter
the
resident
operating
sys-
tem.
Using
'TWIN,
programs
under
development
are
completely
separate
from
the
operating
system,
and
errors
made
in
the
development
process
cannot
alter
system
integrity
or
soft-
ware
already
completed.
TWIN
operational
functions
are
handled
by
one
CPU
(2650)
referred
to
as
the
master.
A
second,
or
slave
CPU
is
used
for
developing
programs
and
interfacing
prototype
devices.
Only
the
slave
CPU
must
mateh
the
users
selec-
ted
microprocessor
for
"design-in"
applica
tions.
In
the
present
system,
software
is
available
for
using
a
2650
microprocessor
as
the
slave.
But
the
hardware
architecturel
is
independent
of
the
microprocessor
used
as
the
sl~ve.Sig
netics
expects
eventually
to
offer
software
for
its
own
3000
bipolar
series.
.
(Cont'd
on
page
2)
cI
2589
SCOTT
BLVD.,
SANTA
CLARA,
CA
95050 (408) 247-8940
Copyright
© 1976
by
Microcomputer
Associates,
Inc.,
All
Rights
Reserved. M.R.
lemas,
President.
Published
monthly.
Subsrcip-
tion
$28.00
per
year, overseas $46.00
per
year.
DARREll
D.
CROW,
Editor;
LILLIAN
lAU,
Associate
Editor;
LINDA
KOCHANOW-
SKI.
Circulation
Editor;
RAY
HOLT,
Applications
Technical
Advisor;
MANNY
lEMAS.
Applications
Technical
Advisor.
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Summary of Contents

Page 1 - DIGES-r

ICROC PU-rER DIGES-r Volume 3, Number 3 INTERSIL-AMS MERGER Intersil Inc. and Advanced Memory Systems Inc. have agreed in principle to merge under the

Page 2 - C-,talog

ROCOMPUTER DIGEST MEMORY SYSTEM Data Systems Design's 210 Diskette Memory System is both DEC instruction set compatible and IBM 3740 format compa

Page 3 - Digital

MICROCOMPUTER DIGEST Schottky logic and three-state computer type busses provide a new level of flexi-bility previously unvailable in table top memory

Page 4 - TECHNOLOGY

MICROCOMPUTER DIGEST SEVEN pC SUPPLIES OFFERED Alpha Power, Inc. is offering seven models in four case sizes of their latest open-frame microcomputer

Page 5 - MICROCOMPUTER DIGEST

MICROCOMPUTER DIGEST 13 EDUCATION September 20-21 Military Microsystems $395 Washington D.C. Integrated Computer Systems Inc. 20-24 SC/MP Applications

Page 6 - SOFTWARE

MICROCOMPUTER DIGEST 19-20 19-21 19-21 19-21 21-22 24 25-29 26-27 28-29 Industrial Microcomputer Control $395 St. Louis MO Integrated Computer Systems

Page 7 - DEVELOP-aD

MICROCOMPUTER DIGEST 15 Rockwell International 1976 1975 % June 30 Share Earning .85 .73 16.4 Earning 32,500K 27,400K 18.6 Sales 1,312,100K 1,185,700

Page 8 - 8 Volume 3, Number

PO BOX 1167, CUPERTINj), CA 95014 • (408) 247-8940 MiniP1'1icro COMPUTER CONFERENCE AND EXPOSITION October 19-20-21,1976 Brooks Hall/Civic Audit

Page 9

MICROCOMPUTER DIGEST SPECIAL FEA TURES INTERSll-AMS MERGER (from page 1) The proposed company should see annual sales by the· end of 1976 somewhere be

Page 10 - ROCOMPUTER DIGEST

Cabinets clockwise from top: CPU, Dual-cassette drive, Keyboard, 9" Monitor. The Digital Group covers up. (Beautifully.) For many months the Digi

Page 11 - COMPUTER

MICROCOMPUTER DIGEST TECHNOLOGY FAIRCHILD PLASTIC F8 FAMILY Fairchild Camera & Instrument is readying plastic versions of its complete f8 family f

Page 12 - I September, 1976

MICROCOMPUTER DIGEST VIDEO RESPONSE CONTROLLER Microcomputer Associates Inc. has an-nounced it is currently marketing and manu-facutring the VRC-lOO V

Page 13 - EDUCATION

MICROCOMPUTER DIGEST speeds) on the P.C.B. and 2102 type RAMS. Slower accessing memories (EPROMS and ROMS) may be used, although this will reduce the

Page 14 - FINANCIAL

MICROCOMPUTER DIGEST Level 2 extends the microinstruction field definition to include symbolic names and default values. Finally, Level 3 allows the m

Page 15 - ADDRESSES

MICROCOMPUTER-DIGEST p. C AUDIO RESPONSE SYSTEM The Vocal Interface Division of Federal Screw Works, a supplier of data communica-tions equipment has

Page 16 - MiniP1'1icro

MICROCOMPUTER DIGEST sample-and-hold, eight-bit A/D converter and an internal clock, which can be easily over-ridden when an external clock is used. F

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