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Omnicalc
Microsphere was a British software company formed in Muswell Hill, north London in 1982 by husband and wife team David and Helen Reidy, best known for several popular computer games in the mid 1980s. Company history The company was formed in November 1982 as a consulting firm, before transforming into development the following year. The Reidys targeted the then recently released ZX Spectrum, and initially attempted to write business software, producing the Visicalc clone ''Omnicalc'', but quickly realised that the future for the machine lay with games after their first effort, a cassette containing ''Crevasse'' and ''Hotfoot'', received a good review in Sinclair User. After recruiting local artist and family friend Keith Warrington, they released one of their best known and critically acclaimed games, ''Skool Daze'' in 1984, which sold 50,000 copies and Crash described as "excellent value, plenty to do, addictive, unusual" and followed it up with ''Back to Skool'' in 1985, whic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ZX Spectrum
The ZX Spectrum () is an 8-bit computing, 8-bit home computer that was developed by Sinclair Research. It was released in the United Kingdom on 23 April 1982, and became Britain's best-selling microcomputer. Referred to during development as the ''ZX81 Colour'' and ''ZX82'', it was launched as the ''ZX Spectrum'' to highlight the machine's colour display, which differed from the black and white display of its predecessor, the ZX81. The Spectrum was released as six different models, ranging from the entry level with 16 Kilobyte, KB RAM released in 1982 to the ZX Spectrum +3 with 128 KB RAM and built in floppy disk drive in 1987; altogether they sold over 5 million units worldwide (not counting List of ZX Spectrum clones, unofficial clones). The Spectrum was among the first home computers in the United Kingdom aimed at a mainstream audience, and it thus had similar significance to the Commodore 64 in the US and the Thomson MO5 in France. The introduction of the ZX Spect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Computer Software
Software is a set of computer programs and associated documentation and data. This is in contrast to hardware, from which the system is built and which actually performs the work. At the lowest programming level, executable code consists of machine language instructions supported by an individual processor—typically a central processing unit (CPU) or a graphics processing unit (GPU). Machine language consists of groups of binary values signifying processor instructions that change the state of the computer from its preceding state. For example, an instruction may change the value stored in a particular storage location in the computer—an effect that is not directly observable to the user. An instruction may also invoke one of many input or output operations, for example displaying some text on a computer screen; causing state changes which should be visible to the user. The processor executes the instructions in the order they are provided, unless it is instructed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compiler
In computing, a compiler is a computer program that translates computer code written in one programming language (the ''source'' language) into another language (the ''target'' language). The name "compiler" is primarily used for programs that translate source code from a high-level programming language to a low-level programming language (e.g. assembly language, object code, or machine code) to create an executable program. Compilers: Principles, Techniques, and Tools by Alfred V. Aho, Ravi Sethi, Jeffrey D. Ullman - Second Edition, 2007 There are many different types of compilers which produce output in different useful forms. A ''cross-compiler'' produces code for a different CPU or operating system than the one on which the cross-compiler itself runs. A ''bootstrap compiler'' is often a temporary compiler, used for compiling a more permanent or better optimised compiler for a language. Related software include, a program that translates from a low-level language to a h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Train Game
''The Train Game'' is a simulation video game originally published by Microsphere for the ZX Spectrum in 1983. Gameplay The player assumes the role of a chief operations manager at a railway. Two different track layouts are included, A and B, each viewed from overhead on a single screen. Trains must be kept running by operating switches to avoid derailment. To score points, trains must stop at stations to pick up passengers. The player selects a level of play, which determines the number of trains running, and for every 25 passengers picked up, the sub-level increases by one. If passengers are kept waiting too long, they become angry and do not increase the player's score. Up to three trains may be running on the network, and passengers are colour-coded indicating which train they wish to board. Each switch is designated a letter of the alphabet, corresponding to the keyboard key the player must press to switch it. Track A has 25 points, and track B has 19. While the player may p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electrical Engineer
Electrical engineering is an engineering discipline concerned with the study, design, and application of equipment, devices, and systems which use electricity, electronics, and electromagnetism. It emerged as an identifiable occupation in the latter half of the 19th century after commercialization of the electric telegraph, the telephone, and electrical power generation, distribution, and use. Electrical engineering is now divided into a wide range of different fields, including computer engineering, systems engineering, power engineering, telecommunications, radio-frequency engineering, signal processing, instrumentation, photovoltaic cells, electronics, and optics and photonics. Many of these disciplines overlap with other engineering branches, spanning a huge number of specializations including hardware engineering, power electronics, electromagnetics and waves, microwave engineering, nanotechnology, electrochemistry, renewable energies, mechatronics/control, and electrica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Software Piracy
Copyright infringement (at times referred to as piracy) is the use of works protected by copyright without permission for a usage where such permission is required, thereby infringing certain exclusive rights granted to the copyright holder, such as the right to reproduce, distribute, display or perform the protected work, or to make derivative works. The copyright holder is typically the work's creator, or a publisher or other business to whom copyright has been assigned. Copyright holders routinely invoke legal and technological measures to prevent and penalize copyright infringement. Copyright infringement disputes are usually resolved through direct negotiation, a notice and take down process, or litigation in civil court. Egregious or large-scale commercial infringement, especially when it involves counterfeiting, is sometimes prosecuted via the criminal justice system. Shifting public expectations, advances in digital technology and the increasing reach of the Internet hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Contact Sam Cruise
''Contact Sam Cruise'' is a computer game created by David Reidy with graphics by Keith Warrington for the ZX Spectrum and released by Microsphere in 1986. Using a similar engine to ''Skool Daze'', this game charted the exploits of a player-controlled private detective called Sam Cruise. Plot The player controls Sam Cruise, a private investigator in an unnamed city in an unnamed year. Sam has received a call from a woman called Lana requesting he meet her in a hotel room in town. "So began", says Cruise in the game's opening "the case of the Bali Budgie" (a play on the title of the noir film '' The Maltese Falcon''). Gameplay The game is made in the style of a 1930s detective movie and Sam needs to solve a murder. Play takes place in a scrolling two-dimensional environment consisting of part of a city in the United States The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North Am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Machine Code
In computer programming, machine code is any low-level programming language, consisting of machine language instructions, which are used to control a computer's central processing unit (CPU). Each instruction causes the CPU to perform a very specific task, such as a load, a store, a jump, or an arithmetic logic unit (ALU) operation on one or more units of data in the CPU's registers or memory. Early CPUs had specific machine code that might break backwards compatibility with each new CPU released. The notion of an instruction set architecture (ISA) defines and specifies the behavior and encoding in memory of the instruction set of the system, without specifying its exact implementation. This acts as an abstraction layer, enabling compatibility within the same family of CPUs, so that machine code written or generated according to the ISA for the family will run on all CPUs in the family, including future CPUs. In general, each architecture family (e.g. x86, ARM) has its own ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Assembly Language
In computer programming, assembly language (or assembler language, or symbolic machine code), often referred to simply as Assembly and commonly abbreviated as ASM or asm, is any low-level programming language with a very strong correspondence between the instructions in the language and the architecture's machine code instructions. Assembly language usually has one statement per machine instruction (1:1), but constants, comments, assembler directives, symbolic labels of, e.g., memory locations, registers, and macros are generally also supported. The first assembly code in which a language is used to represent machine code instructions is found in Kathleen and Andrew Donald Booth's 1947 work, ''Coding for A.R.C.''. Assembly code is converted into executable machine code by a utility program referred to as an ''assembler''. The term "assembler" is generally attributed to Wilkes, Wheeler and Gill in their 1951 book ''The Preparation of Programs for an Electronic Digital Com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Back To Skool
''Back to Skool'' is a video game, sequel to the ''Skool Daze'', created by David Reidy (whose wife Helen was a school teacher at the time) with graphics by Keith Warrington for the ZX Spectrum and released by Microsphere in 1985. The gameplay is very similar to - if more advanced than - ''Skool Daze'', incorporating most of the same characters, gameplay elements and graphics. The game is ranked 19th in the "Your Sinclair official top 100" Spectrum games of all time. Gameplay The game differs from its predecessor by an increase in the size of the play area (including a neighbouring girls' school) and a number of gameplay changes. The girls' school incorporates its own new characters including undistinguished girls with hockey sticks, Hayley (girlfriend of the main character Eric) and Miss Take (the headmistress). Only at break time and lunch times are the girls allowed to mingle with the boys, in the central grassy playground, separated at other times by a high gate. The ope ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
London
London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a major settlement for two millennia. The City of London, its ancient core and financial centre, was founded by the Romans as '' Londinium'' and retains its medieval boundaries.See also: Independent city § National capitals The City of Westminster, to the west of the City of London, has for centuries hosted the national government and parliament. Since the 19th century, the name "London" has also referred to the metropolis around this core, historically split between the counties of Middlesex, Essex, Surrey, Kent, and Hertfordshire, which largely comprises Greater London, governed by the Greater London Authority.The Greater London Authority consists of the Mayor of London and the London Assembly. The London Mayor is distinguished fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skool Daze
''Skool Daze'' is a computer game released by Microsphere in 1984 for the ZX Spectrum and Commodore 64 home computers. It was written by David Reidy, with graphics designed by Keith Warrington. The game was commercially and critically successful, and praised for its original concept. It has since been regarded as one of the pioneers of the sandbox game genre. Gameplay The game features the player as a schoolboy named Eric, with the objective of stealing his report card out of the staff room safe by accomplishing various tasks around the school. The computer controls all the other characters in the game, including the headmaster, other teachers and other pupils. The four teachers are Mr Wacker (the headmaster), Mr Rockitt (the science teacher), Mr Withit (the geography teacher) and Mr Creak (the history master). Other than Eric, three of the pupils are named: Boy Wander (the tearaway), Angelface (the bully) and Einstein (the swot). The player has the option of renaming the char ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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