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The DEC founders Ken Olsen and Harlan Anderson recruited him for their new company in 1960, where he designed the I / O subsystem of the PDP-1, including the first UART.
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DEC and Ken
Ken Olsen was not supportive of this project, so de Castro left DEC along with another hardware engineer, Richard Sogge, and a software engineer, Henry Burkhardt III, to found Data General ( DG ) in 1968.
* Ken Olsen, co-founder of DEC, dies at 84, Mass High Tech
He was recruited by Ken Olsen to join Digital Equipment Corporation ( DEC ) in 1974.
DEC and Olsen
Even this version proved troublesome, and Olsen left in mid-project to start Digital Equipment Corporation ( DEC ).
Kenneth Harry Olsen ( February 20, 1926 – February 6, 2011 ) was an American engineer who co-founded Digital Equipment Corporation ( DEC ) in 1957 with colleague Harlan Anderson.
While Olsen believed VMS was a better solution for DEC customers and often talked of the strengths of the system, he did approve and encourage an internal effort to produce a native BSD-based UNIX product on the VAX line of computers called Ultrix.
Olsen retired from DEC in 1992.
* DEC co-founder Kenneth Olsen mourned by computer industry Network World
DEC and Anderson
The first version of Zork was written in 1977 – 1979 in the MDL programming language on a DEC PDP-10 computer by Anderson, Marc Blank, Bruce Daniels, and Dave Lebling.
DEC and him
Cutler had been developing a follow-on to VMS at DEC called Mica, and when DEC dropped the project he brought the expertise and around 20 engineers with him to Microsoft.
A DEC may have one or more Assistant District Emergency Coordinators serving him or her.
DEC and for
* A very High resolution monochrome video card with blitter and hardware text line and arc drawing capability, was designed for CAD applications, based on the NEC µPD7220 chip designed for graphic terminals, but was also used by some personal computers like the DEC Rainbow, and notably also for the Tulip System I.
Notably, the design team was led by Dirk Meyer, who had worked as a lead engineer on multiple Alpha microprocessors during his employment at DEC. Jerry Sanders had approached many of the engineering staff to work for AMD as DEC wound down their semiconductor business, and brought in a near-complete team of engineering experts.
As a result of its free availability, knowledge of BASIC became relatively widespread ( for a computer language ) and BASIC was implemented by a number of manufacturers, becoming fairly popular on newer minicomputers like the DEC PDP series and the Data General Nova.
Early implementations were for the DEC PDP-7 and PDP-11 minicomputers using early Unix, and Honeywell 36-bit mainframes running the operating system GCOS.
; Open Genera: for DEC Alpha.
Digital Equipment Corporation ( DEC ) further reduced cost for mass-produced minicomputers, and mapped peripherals into the memory bus, so that the input and output devices appeared to be memory locations.
The newly christened DEC received $ 70, 000 from AR & D for a 70 % share of the company, and began operations in a Civil War era textile mill in Maynard, Massachusetts, where plenty of inexpensive manufacturing space was available.
DEC used the Systems Modules to build their " Memory Test " machine for testing core memory systems, selling about 50 of these pre-packaged units over the next eight years.
DEC hit an even lower price-point with the PDP-8 / S, the S for " serial ".
DEC then used the new PDP-8 design as the basis for a new LINC, the two-processor LINC-8.
* The DOS operating system for DEC PDP-11 minicomputers.
Package for DEC Alpha AXP 21064 Microprocessor
These microprocessors were most prominently used in a variety of DEC workstations and servers, which eventually formed the basis for almost all of their mid-to-upper-scale lineup.
A persistent report attributed to DEC insiders suggests the choice of the AXP tag for the processor was made by DEC's legal department, which was still smarting from the VAX trademark fiasco.
The " DIX-group " with Gary Robinson ( DEC ), Phil Arst ( Intel ), and Bob Printis ( Xerox ) submitted the so-called " Blue Book " CSMA / CD specification as a candidate for the LAN specification.
*" Janus " was a codename used for Microsoft Windows 3. 1x and Windows 2000 ( DEC Alpha and Itanium 64-bit editions )
He quit DEC in 1979 and began writing full-time, moving to Orlando, Florida, for a year where he met his third wife Jackie.
In 1990, he resumed his university studies, and was exposed to UNIX for the first time, in the form of a DEC MicroVAX running ULTRIX.
In 1978 Roy Trubshaw, a student at Essex University in the UK, started working on a multi-user adventure game in the MACRO-10 assembly language for a DEC PDP-10.
Later, Systems Concepts attempted to produce a compatible replacement for the DEC PDP-10 computers.
The portability was soon useful, as MUMPS was shortly adapted to a DEC PDP-15, where it lived for some time.
MUMPS was developed with the support of a government research grant, and so MUMPS was released to the public domain ( no longer a requirement for grants ), and was soon ported to a number of other systems including the popular DEC PDP-8, the Data General Nova and the DEC PDP-11 and the Artronix PC12 minicomputer.
DEC and their
Some DEC PDP-10 machines stored their microcode in SRAM chips ( about 80 bits wide x 2 Kwords ), which was typically loaded on power-on through some other front-end CPU.
Looking to simplify and update their line, DEC replaced most of their smaller machines with the PDP-11 in 1970, eventually selling over 600, 000 units and cementing DECs position in the industry.
DEC initially started work on Alpha as a way to re-implement their VAX series, but also employed it in a range of high-performance workstations.
When the Flip Chip packaging allowed the PDP-6 to be re-implemented at a much lower cost, DEC took the opportunity to carry out a similar evolution of their 36-bit design and introduced the PDP-10 in 1968.
DEC later re-branded all of the models in the 36-bit series as the " DECsystem-10 ", and PDP-10s are generally referred to by the model of their CPU, like " KA10 ".
Edson de Castro was the Product Manager at Digital Equipment Corporation ( DEC ) of their pioneering PDP-8, a 12-bit computer generally considered by most to be the first true minicomputer.
DEC management doubted the need to produce a new computer architecture to replace their existing VAX and DECstation lines, and eventually ended the PRISM project in 1988.
When DEC cancelled the Jupiter project in 1983, Systems Concepts hoped to sell their machine to customers with a software investment in PDP-10s.
Many Mesa programmers and developers left Xerox in 1985 ; some of them went to DEC Systems Research Center where they used their experience with Mesa in the design of Modula-2 +, and later of Modula-3.
Consequently, there were no aftermarket peripheral manufacturers who made devices for the MASSbus, and DEC chose to price their own MASSbus devices, notably the RP06 disk drive, at a substantial premium above comparable IBM-compatible devices.
The commercial timesharing services such as CompuServe, On-Line Systems ( OLS ), and Rapidata maintained sophisticated inhouse systems programming groups so that they could modify the operating system as needed for their own businesses without being dependent on DEC or others.
DEC openly published the basic Unibus specifications, even offering prototyping bus interface circuit boards, and encouraging customers to develop their own Unibus-compatible hardware.
As the design was intended to avoid software exchange with existing PDP-11 models, their ill fate in the market was no surprise for anyone except DEC.
Smalltalk-80 was the first language variant made available outside of PARC, first as Smalltalk-80 Version 1, given to a small number of firms ( Hewlett-Packard, Apple Computer, Tektronix, and DEC ) and universities ( UC Berkeley ) for " peer review " and implementation on their platforms.
Commercial Unix vendors, such as Sun, HP, DEC, and IBM each received copies of the vi source, and their operating systems, Solaris, HP-UX, Tru64, and AIX, today continue to maintain versions of vi directly descended from the 3. 7 release, but with added features, such as adjustable key mappings, encryption, and wide character support.
DEC ported OSF / 1 to their new Alpha AXP platform ( as DEC OSF / 1 AXP ), and this was the first version ( Release 1. 2 ) of what is most commonly referred to as OSF / 1.
BBN became interested in buying one for their AI work when they became available, but wanted DEC to add a hardware version of Murphy's pager directly into the system.
DEC was initially interested, but soon ( 1966 ) announced they were in fact dropping the PDP-6 and concentrating solely on their smaller 18-bit and new 16-bit lines.
DEC visited them and many of their ideas were then folded into the KL-10 project.
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