The System Source Computer Museum, located in

Hunt Valley, Maryland Hunt Valley is an unincorporated community in Baltimore County, Maryland, United States, near the site of the Maryland Hunt Cup Steeplechase. It lies just north of the city of Baltimore, along York Road (Maryland Route 45), parallel to Intersta ...

, exhibits notable computing devices from ancient times until the present. Over 5,000 objects are on display, and many of the computation devices are operational.

STEM Stem or STEM may refer to: Plant structures * Plant stem, a plant's aboveground axis, made of vascular tissue, off which leaves and flowers hang * Stipe (botany), a stalk to support some other structure * Stipe (mycology), the stem of a mushro ...

activities are offered to organized tour groups. As of 2022 admission is free. The museum is open weekdays from 9:00AM until 6:00PM, and other times by appointment. Docents are available to lead tours.

History

The museum's origins date to 1981 when a Baltimore

ComputerLand ComputerLand was a widespread chain of retail computer stores during the early years of the microcomputer revolution, and was one of the outlets (along with Computer City and Sears) chosen to introduce the IBM PC in 1981. The first ComputerLand op ...

franchise had computers in inventory that instantly became historic artifacts with the introduction of the

IBM Personal Computer The IBM Personal Computer (model 5150, commonly known as the IBM PC) is the first microcomputer released in the IBM PC model line and the basis for the IBM PC compatible de facto standard. Released on August 12, 1981, it was created by a team ...

. The museum was incorporated as a non-profit 501c3 in 2018 as the Maryland Technology Museum

d/b/a A trade name, trading name, or business name, is a pseudonym used by companies that do not operate under their registered company name. The term for this type of alternative name is a "fictitious" business name. Registering the fictitious name w ...

the System Source Computer Museum. In 2021, the museum became the new home of the

DigiBarn Computer Museum The DigiBarn Computer Museum, or simply DigiBarn, is a computer history museum in Boulder Creek, California, United States. The museum is housed in a 90-year-old barn constructed from old-growth Redwood in the Santa Cruz Mountains, which is adja ...

Exhibits

* Apples: Apple 1,

Apple II The Apple II (stylized as ) is an 8-bit home computer and one of the world's first highly successful mass-produced microcomputer products. It was designed primarily by Steve Wozniak; Jerry Manock developed the design of Apple II's foam-m ...

, Apple ///,

Apple Lisa Lisa is a desktop computer developed by Apple, released on January 19, 1983. It is one of the first personal computers to present a graphical user interface (GUI) in a machine aimed at individual business users. Its development began in 1978. ...

, and most other Apple products * Cray Computer:

Cray 1 The Cray-1 was a supercomputer designed, manufactured and marketed by Cray Research. Announced in 1975, the first Cray-1 system was installed at Los Alamos National Laboratory in 1976. Eventually, over 100 Cray-1s were sold, making it one of the ...

Cray 2 The Cray-2 is a supercomputer with four vector processors made by Cray Research starting in 1985. At 1.9 GFLOPS peak performance, it was the fastest machine in the world when it was released, replacing the Cray X-MP in that spot. It was, i ...

Cray T90 The Cray T90 series (code-named ''Triton'' during development) was the last of a line of vector processing supercomputers manufactured by Cray Research, Inc, superseding the Cray C90 series. The first machines were shipped in 1995, and featured a ...

* DEC Computers:

PDP-5 The PDP-5 was Digital Equipment Corporation's first 12-bit computer, introduced in 1963. History An earlier 12-bit computer, named LINC has been described as the first minicomputer and also "the first modern personal computer." It had 2,048 12 ...

PDP-8 The PDP-8 is a 12-bit computing, 12-bit minicomputer that was produced by Digital Equipment Corporation, Digital Equipment Corporation (DEC). It was the first commercially successful minicomputer, with over 50,000 units being sold over the model's ...

LINC The LINC (Laboratory INstrument Computer) is a 12-bit, 2048-word transistorized computer. The LINC is considered by some the first minicomputer and a forerunner to the personal computer. Originally named the "Linc", suggesting the project's o ...

PDP-12 The PDP-12 (Programmed Data Processor) was created by Digital Equipment Corporation (DEC) in 1969 and was marketed specifically for science and engineering.see Mini-Computer section and press see more, then press see more again It was the third i ...

VAX VAX (an acronym for Virtual Address eXtension) is a series of computers featuring a 32-bit instruction set architecture (ISA) and virtual memory that was developed and sold by Digital Equipment Corporation (DEC) in the late 20th century. The V ...

* Computer Memory:

Delay-line memory Delay-line memory is a form of computer memory, now obsolete, that was used on some of the earliest digital computers. Like many modern forms of electronic computer memory, delay-line memory was a refreshable memory, but as opposed to modern ra ...

Magnetic-core memory Magnetic-core memory was the predominant form of random access, random-access computer memory for 20 years between about 1955 and 1975. Such memory is often just called core memory, or, informally, core. Core memory uses toroids (rings) of a ...

* Pre-Industrial Computers:

Abacus The abacus (''plural'' abaci or abacuses), also called a counting frame, is a calculating tool which has been used since ancient times. It was used in the ancient Near East, Europe, China, and Russia, centuries before the adoption of the Hin ...

Quipu ''Quipu'' (also spelled ''khipu'') are recording devices fashioned from strings historically used by a number of cultures in the region of Andean South America. A ''quipu'' usually consisted of cotton or camelid fiber strings. The Inca people u ...

Napier's bones Napier's bones is a manually-operated calculating device created by John Napier of Merchiston, Scotland for the calculation of products and quotients of numbers. The method was based on lattice multiplication, and also called ''rabdology'', a wor ...

Slide rule The slide rule is a mechanical analog computer which is used primarily for multiplication and division, and for functions such as exponents, roots, logarithms, and trigonometry. It is not typically designed for addition or subtraction, which is ...

* Tic-Tac-Toe and Computers:

Charles Babbage Charles Babbage (; 26 December 1791 – 18 October 1871) was an English polymath. A mathematician, philosopher, inventor and mechanical engineer, Babbage originated the concept of a digital programmable computer. Babbage is considered ...

, Relay Tic Tac Toe Machine,

Matchbox Educable Noughts and Crosses Engine The Matchbox Educable Noughts and Crosses Engine (sometimes called the Machine Educable Noughts and Crosses Engine or MENACE) was a mechanical computer made from 304 matchboxes designed and built by artificial intelligence researcher Donald Mic ...

(MENACE) * Univac:

UNIVAC 490 UNIVAC (Universal Automatic Computer) was a line of electronic digital stored-program computers starting with the products of the Eckert–Mauchly Computer Corporation. Later the name was applied to a division of the Remington Rand company and ...

UNIVAC 418 UNIVAC (Universal Automatic Computer) was a line of electronic digital stored-program computers starting with the products of the Eckert–Mauchly Computer Corporation. Later the name was applied to a division of the Remington Rand company and ...

* Xerox:

Xerox Alto The Xerox Alto is a computer designed from its inception to support an operating system based on a graphical user interface (GUI), later using the desktop metaphor. The first machines were introduced on 1 March 1973, a decade before mass-market G ...

STEM programs

* Hardware Workshop * Programming a Virtual PET * Squeak (Etoys Programming)

References

External links

* {{Authority control Museums established in 1981 Museums in Baltimore County, Maryland History museums in Maryland Computer museums in the United States