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Rod Holt
Frederick Rodney HoltMichael Moritz, Moritz, Michael, ''The Little Kingdom,'' ebook (born 1934) is an American electrical engineer and political activist. He became the fifth employee of Apple Inc., Apple where he developed the Switched-mode power supply, power supply for the 1977 Apple II#wozorg, Apple II. Background Holt was born in 1934 to a psychiatry resident father and artist and teacher mother. He became interested in electronics by the age of 14 and taught Amateur radio, ham radio courses for Wellesley High School by the age of 16. In 1952, after graduating from high school, Holt married his high school girlfriend Joanne. He also joined Ohio State University as a math major. He and Joanne had two children, Christine and Cheryl, during this period. Holt later stated that while at OSU, he also "became entranced with motorcycles and opened up my own motorcycle shop. That adventure failed within a year, however, and I then worked in the electronics industry to support my fami ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boston
Boston is the capital and most populous city in the Commonwealth (U.S. state), Commonwealth of Massachusetts in the United States. The city serves as the cultural and Financial centre, financial center of New England, a region of the Northeastern United States. It has an area of and a population of 675,647 as of the 2020 United States census, 2020 census, making it the third-largest city in the Northeastern United States after New York City and Philadelphia. The larger Greater Boston metropolitan statistical area has a population of 4.9 million as of 2023, making it the largest metropolitan area in New England and the Metropolitan statistical area, eleventh-largest in the United States. Boston was founded on Shawmut Peninsula in 1630 by English Puritans, Puritan settlers, who named the city after the market town of Boston, Lincolnshire in England. During the American Revolution and American Revolutionary War, Revolutionary War, Boston was home to several seminal events, incl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Socialist
Socialism is an economic ideology, economic and political philosophy encompassing diverse Economic system, economic and social systems characterised by social ownership of the means of production, as opposed to private ownership. It describes the Economic ideology, economic, Political philosophy, political, and Social theory, social theories and Political movement, movements associated with the implementation of such systems. Social ownership can take various forms, including State ownership, public, Community ownership, community, Collective ownership, collective, cooperative, or Employee stock ownership, employee.: "Just as private ownership defines capitalism, social ownership defines socialism. The essential characteristic of socialism in theory is that it destroys social hierarchies, and therefore leads to a politically and economically egalitarian society. Two closely related consequences follow. First, every individual is entitled to an equal ownership share that earns an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bill Fernandez
Bill Fernandez is a user-interface architect and innovator who was Apple Computer's first full time employee when they incorporated in 1977 and was issued badge number 4. He is credited with introducing fellow Homestead High School student Steve Jobs to his friend (and Homestead alumni) Steve Wozniak and developing schematics for the Apple II so the computer could be mass-produced. He is the son of Jeryy Fernandez and Bambi Fernandez (both Stanford University graduates). Career at Apple Fernandez worked on the Cream Soda Computer with Steve Wozniak in 1971, the first computer designed by Wozniak and built using spare parts from Wozniak's job. He later joined Apple and worked on both the Apple I and Apple II Apple II ("apple Roman numerals, two", stylized as Apple ][) is a series of microcomputers manufactured by Apple Computer, Inc. from 1977 to 1993. The Apple II (original), original Apple II model, which gave the series its name, was designed ... personal computers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DECSYSTEM-20
The DECSYSTEM-20 was a family of 36-bit Digital Equipment Corporation PDP-10 mainframe computers running the TOPS-20 operating system and was introduced in 1977. PDP-10 computers running the TOPS-10 operating system were labeled ''DECsystem-10'' as a way of differentiating them from the PDP-11. Later on, those systems running TOPS-20 (on the KL10 PDP-10 processors) were labeled ''DECSYSTEM-20'' (the block capitals being the result of a lawsuit brought against DEC by Singer, which made its own System Ten model, occasionally referenced in reporting as the "System 10"). The DECSYSTEM-20 was sometimes called PDP-20, although this designation was never used by DEC. Models The following models were produced: *DECSYSTEM-2020: KS10 bit-slice processor with up to 512 kilowords of solid state RAM (The ADP OnSite version of the DECSYSTEM-2020 supported 1 MW of RAM) *DECSYSTEM-2040: KL10 ECL processor with up to 1024 kilowords of magnetic core RAM *DECSYSTEM-2050: KL10 ECL proce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM 5100
The IBM 5100 Portable Computer is one of the first portable computers, introduced in September 1975, six years before the IBM Personal Computer, and eight before the first successful IBM compatible portable computer, the Compaq Portable. It was the evolution of a prototype called the SCAMP (Special Computer APL Machine Portable) that was developed at the IBM Los Gatos Laboratory and Palo Alto Scientific Center in 1973. Whether considered evolutionary from SCAMP or revolutionary, it still needed to be plugged into an electric socket. When the IBM PC was introduced in 1981, it was originally designated as the IBM 5150, putting it in the "5100" series, though its architecture was unrelated to the IBM 5100's. The 5100 was IBM's second transportable computer. Previously, a truck-based IBM 1401 was configured in 1960 for military use and referred to as a ''mobile'' computer. The IBM 5100 was withdrawn in March 1982, by which time IBM had announced its larger cousins, the IBM 5110 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intel 8008
The Intel 8008 ("''eight-thousand-eight''" or "''eighty-oh-eight''") is an early 8-bit microprocessor capable of addressing 16 KB of memory, introduced in April 1972. The 8008 architecture was designed by Computer Terminal Corporation (CTC) and was implemented and manufactured by Intel. While the 8008 was originally designed for use in CTC's Datapoint 2200 programmable terminal, an agreement between CTC and Intel permitted Intel to market the chip to other customers after Seiko expressed an interest in using it for a calculator. History In order to address several issues with the Datapoint 3300, including excessive heat radiation, Computer Terminal Corporation (CTC) designed the architecture of the 3300's planned successor with a CPU as part of the internal circuitry re-implemented on a single chip. Looking for a company able to produce their chip design, CTC co-founder Austin O. "Gus" Roche turned to Intel, then primarily a vendor of memory chips. Roche met with Bob Noyce, who ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Datapoint 2200
The Datapoint 2200 was a mass-produced programmable terminal usable as a computer, designed by Computer Terminal Corporation (CTC) founders Phil Ray and Gus Roche and announced by CTC in June 1970 (with units shipping in 1971). It was initially presented by CTC as a versatile and cost-efficient terminal for connecting to a wide variety of mainframes by loading various terminal emulations from tape rather than being hardwired as most contemporary terminals, including their earlier Datapoint 3300. Dave Gust, a CTC salesman, realized that the 2200 could meet Pillsbury Foods's need for a small computer in the field, after which the 2200 was marketed as a stand-alone computer. Its industrial designer John "Jack" Frassanito has later claimed that Ray and Roche always intended the Datapoint 2200 to be a full-blown personal computer, but that they chose to keep quiet about this so as not to concern investors and others. The terminal's multi-chip CPU (processor)'s instruction set be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PDP-11/20
The PDP–11 is a series of 16-bit minicomputers originally sold by Digital Equipment Corporation (DEC) from 1970 into the late 1990s, one of a set of products in the Programmed Data Processor (PDP) series. In total, around 600,000 PDP-11s of all models were sold, making it one of DEC's most successful product lines. The PDP-11 is considered by some experts to be the most popular minicomputer. The PDP–11 included a number of innovative features in its instruction set and additional general-purpose registers that made it easier to program than earlier models in the PDP series. Further, the innovative Unibus system allowed external devices to be more easily interfaced to the system using direct memory access, opening the system to a wide variety of peripherals. The PDP–11 replaced the PDP–8 in many real-time computing applications, although both product lines lived in parallel for more than 10 years. The ease of programming of the PDP–11 made it popular for general-purpose ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Switching Power Supply
A switched-mode power supply (SMPS), also called switching-mode power supply, switch-mode power supply, switched power supply, or simply switcher, is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently. Like other power supplies, a SMPS transfers power from a DC or AC source (often mains power, see AC adapter) to DC loads, such as a personal computer, while converting voltage and current characteristics. Unlike a linear power supply, the pass transistor of a switching-mode supply continually switches between low-dissipation, full-on and full-off states, and spends very little time in the high-dissipation transitions, which minimizes wasted energy. Voltage regulation is achieved by varying the ratio of on-to-off time (also known as duty cycle). In contrast, a linear power supply regulates the output voltage by continually dissipating power in the pass transistor. The switched-mode power supply's higher electrical efficien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michael Scott (Apple)
Michael "Scotty" Scott (born February 11, 1945) is an American entrepreneur, who was the first CEO of Apple Computer from February 1977 to March 1981. Formerly director of manufacturing at National Semiconductor, Scott was persuaded by Mike Markkula to take the CEO position at Apple, as the co-founders — Steve Jobs and Steve Wozniak — were both seen as insufficiently experienced for the job at the time. Career After graduating from the California Institute of Technology, Scott worked at Fairchild Semiconductor where he shared a cubicle with Mike Markkula and Gene Carter; all 3 would later end up working together at Apple. Apple Attempting to set an example for all businesses, in 1979, Scott declared there would be no typewriters at Apple. In 1979 and 1980, Jef Raskin's Macintosh project was a four-person research effort. It was not considered important within Apple and was almost canceled a couple of times. When Apple had another major reorganization in the f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allan Alcorn
Allan Alcorn (born January 1, 1948) is an American pioneering engineer and computer scientist best known for creating '' Pong'', one of the first video games. In 2009, he was chosen by IGN as one of the top 100 game creators of all time. Atari and ''Pong'' Alcorn grew up in San Francisco, California, and attended the University of California, Berkeley, graduating with a Bachelor of Science degree in electrical engineering and computer sciences in 1971. He worked for the pioneering video company Ampex, where he met Ted Dabney and several other people that would end up being constants through the Atari, Inc., Apple, Cyan Engineering and Pizza Time Theater (now known as Chuck E. Cheese's) companies. Alcorn was the designer of the video arcade game '' Pong'', creating it under the direction of Nolan Bushnell and Dabney. ''Pong'' was a hit in the 1970s. In addition to direct involvement with all the breakout Atari products, such as the Atari 2600, Alcorn was involved at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steve Jobs
Steven Paul Jobs (February 24, 1955 – October 5, 2011) was an American businessman, inventor, and investor best known for co-founding the technology company Apple Inc. Jobs was also the founder of NeXT and chairman and majority shareholder of Pixar. He was a pioneer of the personal computer revolution of the 1970s and 1980s, along with his early business partner and fellow Apple co-founder Steve Wozniak. Jobs was born in San Francisco in 1955 and adopted shortly afterwards. He attended Reed College in 1972 before withdrawing that same year. In 1974, he traveled through India, Hippie trail, seeking enlightenment before later studying Buddhism in the West#Emerging mainstream western Buddhism, Zen Buddhism. He and Wozniak co-founded Apple in 1976 to further develop and sell Wozniak's Apple I personal computer. Together, the duo gained fame and wealth a year later with production and sale of the Apple II, one of the first highly successful mass-produced microcomputers. Jobs saw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
