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ZX81
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. The ZX81 was designed to be small, simple, and above all, inexpensive, with as few components as possible. Video output was designed for a television set rather than a dedicated monitor. Programs and data are loaded and saved onto compact audio cassettes. It uses only four silicon chips and 1 KB of memory. It has no power switch or moving parts, with the exception ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ZX Spectrum
The ZX Spectrum () is an 8-bit computing, 8-bit home computer developed and marketed by Sinclair Research. One of the most influential computers ever made and one of the all-time bestselling British computers, over five million units were sold. It was released in the United Kingdom on 23 April 1982, and around the world in the following years, most notably in Europe and the United States. The machine was designed by English entrepreneur and inventor Sir Clive Sinclair and his small team in Cambridge, and was manufactured in Dundee, Scotland by Timex Corporation. It was made to be small, simple, and most importantly inexpensive, with as few components as possible. The addendum "Spectrum" was chosen to highlight the machine's colour display, which differed from the black-and-white display of its predecessor, the ZX81. Rick Dickinson designed its distinctive case, rainbow motif, and chiclet keyboard, rubber keyboard. Video output is transmitted to a television set rather than a ded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nissan 300ZX
The Nissan 300ZX is a sports car that was produced across two different generations. As with all other versions of the Z, the 300ZX was sold within the Japanese domestic market under the name Fairlady Z. It was sold in Japan from 1983 to 2000 and in the United States from 1984 to 1996, the 300ZX name followed the numerical convention initiated with the original Z car, the Nissan Fairlady Z (S30), which was marketed in the U.S. as the 240Z. The addition of the "X" to the car's name was a carryover from its predecessor, the Nissan Fairlady Z (S130), 280ZX, to signify the presence of more luxury and comfort oriented features. The first generation 300ZX known as the Z31 model was produced from 1983 through 1989 and was a sales success becoming the highest volume Z-car for Nissan. To become even more competitive in the sports car market, the second generation 300ZX was driven up-market. It was redesigned to be faster and to feature more advanced technology, but came with a higher pri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ZX-calculus
The ZX-calculus is a rigorous Graphical modeling language, graphical language for reasoning about linear maps between qubits, which are represented as string diagrams called ''ZX-diagrams''. A ZX-diagram consists of a set of generators called ''spiders'' that represent specific tensors. These are connected together to form a tensor network similar to Penrose graphical notation. Due to the symmetries of the spiders and the properties of the underlying Category (mathematics), category, topologically deforming a ZX-diagram (i.e. moving the generators without changing their connections) does not affect the linear map it represents. In addition to the equalities between ZX-diagrams that are generated by topological deformations, the calculus also has a set of Graph rewriting, graphical rewrite rules for transforming diagrams into one another. The ZX-calculus is ''universal'' in the sense that any linear map between qubits can be represented as a diagram, and different sets of graphical re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ZX80
The Sinclair ZX80 is a home computer launched on 29 January 1980 by Science of Cambridge Ltd. (later to be better known as Sinclair Research). It is notable for being one of the first computers available in the United Kingdom for less than a hundred pounds. It was available in kit form for £79.95, where purchasers had to assemble and solder it together, and as a ready-built version at £99.95. The ZX80 was advertised as the first personal computer for under £100 and received praise for its value and documentation. However, it faced criticism for screen blanking during program execution, small RAM size, and the keyboard design. It was very popular straight away, and for some time there was a waiting list of several months for either version of the machine. Name The ZX80 was named after the Z80 processor with the 'X' meaning "the mystery ingredient". Hardware Internally, the machine was designed by Jim Westwood around a Z80 central processing unit with a clock speed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Citroën ZX
The Citroën ZX is a Compact car, small family car produced by the French manufacturer Citroën between 1991 and 1998. At the beginning of the 1990s, the ZX was Citroën's entry in the class traditionally dominated in Europe by the Ford Escort (European), Ford Escort and Vauxhall Astra, Vauxhall/Opel Astra, a market segment Citroën had briefly abandoned with the demise of the Citroën GS, GSA in 1986. The Citroën BX, BX had tried to address the small family car market and the large family car market by being "between sizes" but well packaged. For 1993, the Citroën ZX chassis was also used for the Peugeot 306 which, with its attractive Peugeot 205 derived styling, was an even more successful car than its twin. The Citroën Berlingo and Peugeot Partner were also built on the front half of the same platform, the rear coming from the 405, an arrangement shared underneath the Xsara Picasso. It was replaced by the Citroën Xsara, Xsara in September 1997, but production in Europe co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
