Minivac 601

Last updated
Minivac 601
Minivac 601.jpg
Developer Claude Shannon
ManufacturerScientific Development Corporation (Cambridge, Massachusetts, later in Watertown, Massachusetts)
TypeElectromechanical
Release datec.1961
Introductory priceUS$85(equivalent to $832.39 in 2022)
CPU (None)
Memory6 bits
Storage6 bits
Display6 indicator lamps, 16-position motorized dial
Input6 slide switches, 6 pushbutton switches, 16-position motorized dial
Power110 VAC
Dimensions5 1/8 x 24 x 13 1/4 in. [1]
Mass9 kilograms (20 lb)

Minivac 601 Digital Computer Kit was an electromechanical digital computer system created by information theory pioneer Claude Shannon and sold by Scientific Development Corporation as an educational toy using digital circuits. [2]

Contents

Description

In 1961, the system was sold by Scientific Development Corporation's "Consumer Products Division", [2] which was soon renamed as the "Digital Equipment Division". [3] The Minivac 601 was originally housed in a blue-painted wooden case. It used DPDT electrical relays as logic switches and for temporary data storage. The main board had a six-bit binary input/output array, consisting of simple DPDT slide switches, SPDT pushbutton switches, and indicator lights. A 16-position motorized dial rotary switch could be used to input decimal or hexadecimal numbers, to output numbers, or to act as a clock signal generator.

The components could be interconnected by manually inserting jumper wires fitted with tapered pin connectors into sockets on the main circuit board. The combined components just barely allowed the simple computer to play a winning game of Tic-Tac-Toe, or to simulate a simple elevator control system.

An "advanced and improved" version called the Minivac 6010 was released in early 1962, housed in a gray metal case and featuring higher-quality components. [4] It was supplied with additional patch cords incorporating special resistors, capacitors, and diodes for further capabilities.[ which? ] [4] Although the price was also increased considerably, the system was more successfully sold to the corporate market, rather than as a toy. [5]

In 1962, the Scientific Development Corporation also advertised educational electronic kits based on analog electronics technology. [6]

Related Research Articles

<span class="mw-page-title-main">Digital Equipment Corporation</span> U.S. computer manufacturer 1957–1998

Digital Equipment Corporation, using the trademark Digital, was a major American company in the computer industry from the 1960s to the 1990s. The company was co-founded by Ken Olsen and Harlan Anderson in 1957. Olsen was president until forced to resign in 1992, after the company had gone into precipitous decline.

<span class="mw-page-title-main">ZX81</span> Inexpensive home computer by Sinclair Research, 1981

The ZX81 is a home computer that was produced by Sinclair Research and manufactured in Dundee, Scotland, by Timex Corporation. It was launched in the United Kingdom in March 1981 as the successor to Sinclair's ZX80 and designed to be a low-cost introduction to home computing for the general public. It was hugely successful; more than 1.5 million units were sold. In the United States it was initially sold as the ZX-81 under licence by Timex. Timex later produced its own versions of the ZX81: the Timex Sinclair 1000 and Timex Sinclair 1500. Unauthorized ZX81 clones were produced in several countries.

<span class="mw-page-title-main">Microcomputer</span> Small computer with a processor made of one or a few integrated circuits

A microcomputer is a small, relatively inexpensive computer having a central processing unit (CPU) made out of a microprocessor. The computer also includes memory and input/output (I/O) circuitry together mounted on a printed circuit board (PCB). Microcomputers became popular in the 1970s and 1980s with the advent of increasingly powerful microprocessors. The predecessors to these computers, mainframes and minicomputers, were comparatively much larger and more expensive. Many microcomputers are also personal computers. An early use of the term "personal computer" in 1962 predates microprocessor-based designs. (See "Personal Computer: Computers at Companies" reference below). A "microcomputer" used as an embedded control system may have no human-readable input and output devices. "Personal computer" may be used generically or may denote an IBM PC compatible machine.

<span class="mw-page-title-main">Altair 8800</span> Microcomputer designed in 1974

The Altair 8800 is a microcomputer designed in 1974 by MITS and based on the Intel 8080 CPU. Interest grew quickly after it was featured on the cover of the January 1975 issue of Popular Electronics and was sold by mail order through advertisements there, in Radio-Electronics, and in other hobbyist magazines. The Altair is widely recognized as the spark that ignited the microcomputer revolution as the first commercially successful personal computer. The computer bus designed for the Altair was to become a de facto standard in the form of the S-100 bus, and the first programming language for the machine was Microsoft's founding product, Altair BASIC.

<span class="mw-page-title-main">Wham-O</span> American toy company

Wham-O Inc. is an American toy company based in Carson, California, United States. It is known for creating and marketing many popular toys for nearly 70 years, including the Hula hoop, Frisbee, Slip 'N Slide, Super Ball, Trac-Ball, Silly String, Hacky sack, Wham-O Bird Ornithopter and Boogie Board, many of which have become genericized trademarks.

<span class="mw-page-title-main">Geniac</span> Educational toy

Geniac was an educational toy billed as a "computer" designed and marketed by Edmund Berkeley, with Oliver Garfield from 1955 to 1958, but with Garfield continuing without Berkeley through the 1960s. The name stood for "Genius Almost-automatic Computer" but suggests a portmanteau of genius and ENIAC.

Resistor–transistor logic (RTL) is a class of digital circuits built using resistors as the input network and bipolar junction transistors (BJTs) as switching devices. RTL is the earliest class of transistorized digital logic circuit; it was succeeded by diode–transistor logic (DTL) and transistor–transistor logic (TTL).

<span class="mw-page-title-main">Erector Set</span> Brand of metal toy construction set

Erector Set was a brand of metal toy construction sets which were originally patented by Alfred Carlton Gilbert and first sold by his company, the Mysto Manufacturing Company of New Haven, Connecticut in 1913. In 1916, the company was reorganized as the A.C. Gilbert Company. The brand continued its independent existence under various corporate ownerships until 2000, when Meccano bought the Erector brand and consolidated its worldwide marketing with its own brand. The coverage here focuses on the historical legacy of the classic Erector Set; for current developments under the "Erector by Meccano" brand name, see the Meccano article.

<span class="mw-page-title-main">Heathkit</span> Brand name of kits and other electronic products produced and marketed by the Heath Company

Heathkit is the brand name of kits and other electronic products produced and marketed by the Heath Company. The products over the decades have included electronic test equipment, high fidelity home audio equipment, television receivers, amateur radio equipment, robots, electronic ignition conversion modules for early model cars with point style ignitions, and the influential Heath H-8, H-89, and H-11 hobbyist computers, which were sold in kit form for assembly by the purchaser.

Micro Instrumentation and Telemetry Systems (MITS) was an American electronics company founded in Albuquerque, New Mexico that began manufacturing electronic calculators in 1971 and personal computers in 1975.

Sinclair Radionics Ltd was a company founded by Sir Clive Sinclair in Cambridge, England and developed hi-fi products, radios, calculators and scientific instruments.

<span class="mw-page-title-main">Universal Abit</span> Taiwanese computer components manufacturer

Universal ABIT Co., Ltd was a computer components manufacturer, based in Taiwan, active since the 1980s. Its core product line were motherboards aimed at the overclocker market. Abit experienced serious financial problems in 2005. The brand name "ABIT" and other intangible properties, including patents and trademarks, were acquired by Universal Scientific Industrial Co., Ltd. (USI) in May 2006.

<span class="mw-page-title-main">Electronic component</span> Discrete device in an electronic system

An electronic component is any basic discrete device or physical entity in an electronic system used to affect electrons or their associated fields. Electronic components are mostly industrial products, available in a singular form and are not to be confused with electrical elements, which are conceptual abstractions representing idealized electronic components and elements.

<i>The Corporate Machine</i> 2001 video game

The Corporate Machine is a business simulation computer game from Stardock in which the goal is to create a corporation in one of four industries and eventually dominate rival companies. To win the player must dominate the chosen market. The Corporate Machine is a follow up to the game Business Tycoon, which was itself a sequel to the game Entrepreneur, all developed by Stardock.

CompuAdd Corporation was a manufacturer of personal computers in Austin, Texas. It assembled its product from components manufactured by others. CompuAdd created generic PC clone computers, but unlike most clone makers, it had a large engineering staff. CompuAdd also created a Multimedia PC (MPC), the FunStation, and a Sun workstation clone, the SS-1.

<span class="mw-page-title-main">Processor Technology</span> Personal computer company, founded 1975

Processor Technology Corporation was a personal computer company founded in April 1975, by Gary Ingram and Bob Marsh in Berkeley, California. Their first product was a 4K byte RAM board that was compatible with the MITS Altair 8800 computer but more reliable than the MITS board. This was followed by a series of memory and I/O boards including a video display module.

Avnet, Inc. is a distributor of electronic components headquartered in Phoenix, Arizona, named after Charles Avnet, who founded the company in 1921. After its start on Manhattan's Radio Row, the company became incorporated in 1955 and began trading on the New York Stock Exchange in 1961. On May 8, 2018, Avnet changed stock markets to Nasdaq, trading under the same ticker AVT.

<span class="mw-page-title-main">Aluminum Model Toys</span>

Aluminum Model Toys (AMT) is a toy manufacturing brand founded in Troy, Michigan, in 1948 by West Gallogly Sr. AMT became known for manufacturing 1/25 scale plastic automobile dealer promotional model cars and friction motor models, and pioneered the annual 3-in-1 model kit buildable in stock, custom, or hot-rod versions. The company made a two-way deal in 1966 with Desilu Productions to produce a line of Star Trek models and to produce a 3/4 scale exterior and interior filming set of the Galileo shuttlecraft. It was also known for producing model trucks and movie and TV vehicles.

<span class="mw-page-title-main">Educational toy</span> Plaything intended to stimulate learning

Educational toys are objects of play, generally designed for children, which are expected to stimulate learning. They are often intended to meet an educational purpose such as helping a child develop a particular skill or teaching a child about a particular subject. They often simplify, miniaturize, or even model activities and objects used by adults.

<span class="mw-page-title-main">History of personal computers</span> History of the consumer personal computer

The history of the personal computer as a mass-market consumer electronic device began with the microcomputer revolution of the 1970s. A personal computer is one intended for interactive individual use, as opposed to a mainframe computer where the end user's requests are filtered through operating staff, or a time-sharing system in which one large processor is shared by many individuals. After the development of the microprocessor, individual personal computers were low enough in cost that they eventually became affordable consumer goods. Early personal computers – generally called microcomputers – were sold often in electronic kit form and in limited numbers, and were of interest mostly to hobbyists and technicians.

References

  1. MINIVAC 601 Computer History Museum, "Description: This item comprises two pieces: A: Main unit B: Bag of jumper cables Produced by SDC Corporation, Watertown, MA. Operates from 110VAC. Object consists of: minivac, original cardboard box, 3 bags of jumper cables, 6 electrolitic[ sic ] capacitors..."
  2. 1 2 Advertisement: Minivac 601, Page 33, 1961-10, Popular Science
  3. Advertisement: Minivac 601, Page 31, 1961-11, Popular Science
  4. 1 2 "Minivac 6010". Old Computer Museum. Retrieved 2016-05-01.
  5. Price and Perceived Value Archived 2016-04-08 at the Wayback Machine Chapter 3, Page 11, Marketing That Works: How Entrepreneurial Marketing Can Add Sustainable Value to Any Sized Company, By Leonard M. Lodish; Howard L. Morgan; Shellye Archambeau, ISBN   978-0-13-239075-0, "...the entrepreneur's line was the ...MINIVAC 601...no one in the third segment, the corporate sector, bought the product...the corporate types was: "Oh, that—it's just a toy!" The entrepreneur was creative and he listened carefully. He also understood marketing. His next product was the same basic kit—with the switches upgraded to higher tolerances and the machine color changed from blue and red to gunmetal gray. The name was changed to the MINIVAC 6010 and he increased the price from $79.95 to $479. The MINIVAC 6010 sold very well to the corporate segment at $479..."
  6. Advertisement: Basic Communications Kits, Page 16, 1962-06, Popular Science