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List Of ZX Spectrum Clones
The following is a list of clones of Sinclair Research's ZX Spectrum home computer. This list includes both official clones (from Timex Corporation) and many unofficial clones, most of which were produced in Eastern Bloc countries. The list does not include computers which require additional hardware or software to become ZX-compatible. Official The only official clones of the Spectrum were made by Timex. There were three models developed, only two of which were released: Timex Sinclair 2068 The Timex Sinclair 2068 or T/S 2068 (also known as TC 2068 or UK 2086) was a significantly more sophisticated machine than the original Spectrum. The most notable changes were the addition of a cartridge port, an AY-3-8912 sound chip, and an improved ULA giving access to better graphics modes. The T/S 2068 was produced for consumers in the United States, while very similar machines were marketed in Portugal and Poland as the Timex Computer 2068 (TC 2068) and Unipolbrit Komputer 2086 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clone (computer Science)
In computing, a clone is computer hardware, hardware or software that is designed to function in exactly the same way as another system. A specific subset of clones are remakes (or remades), which are revivals of old, obsolete, or discontinued products. Motivation Clones and remakes are created for some reasons, including competition, standardization, availability across platforms, and even as Homage (arts), homage. computer compatibility, Compatibility with the original system is usually the explicit purpose of cloning hardware or low-level software such as operating systems (e.g. AROS Research Operating System, AROS and MorphOS are intended to be compatible with AmigaOS). Application software is cloned by providing the same functionality. Commercially-motivated clones are made often during a competitor product's initial successful commercial run, intentionally competing with the original and trying to participate in their success. Hardware Hardware clones When Internationa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amstrad
Amstrad was a British electronics company, founded in 1968 by Alan Sugar at the age of 21. The name is a contraction of Alan Michael Sugar Trading. It was first listed on the London Stock Exchange in April 1980. During the late 1980s, Amstrad had a substantial share of the PC market in the UK. Amstrad was once a FTSE 100 Index constituent, but since 2007 has been wholly owned by Sky UK. , Amstrad's main business was manufacturing Sky UK interactive boxes. In 2010, Sky integrated Amstrad's satellite division as part of Sky so they could make their own set-top boxes in-house. The company had offices in Kings Road, Brentwood, Essex. History 1960s and 1970s Amstrad (also known as AMSTrad) was founded in 1968 by Alan Sugar at the age of 21, the name of the original company being AMS Trading (Amstrad) Limited, derived from its founder's initials (Alan Michael Sugar). Amstrad entered the market in the field of consumer electronics. During the 1970s they were at the forefront ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Power Supply Unit (computer)
A power supply unit (PSU) converts mains AC to low-voltage regulated DC power for the internal components of a computer. Modern personal computers universally use switched-mode power supplies. Some power supplies have a manual switch for selecting input voltage, while others automatically adapt to the mains voltage. Most modern desktop personal computer power supplies conform to the ATX specification, which includes form factor and voltage tolerances. While an ATX power supply is connected to the mains supply, it always provides a 5-volt standby (5VSB) power so that the standby functions on the computer and certain peripherals are powered. ATX power supplies are turned on and off by a signal from the motherboard. They also provide a signal to the motherboard to indicate when the DC voltages are in spec, so that the computer is able to safely power up and boot. The most recent ATX PSU standard is version 3.0 as of mid-2022. Functions The desktop computer power supply convert ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentagon (computer)
The Pentagon (Пентагон) home computer was a clone of the British-made Sinclair ZX Spectrum 128. It was manufactured by amateurs in the former Soviet Union, following freely distributable documentation. Its PCB was copied all over the ex-USSR in 1991-1996, which made it a widespread ZX Spectrum clone. The name "Pentagon" derives from the shape of the original PCB (Pentagon 48), with a diagonal cut in one of the corners. Many simple devices (upgrades) were invented to connect to the Pentagon with some soldering. Versions *Pentagon 48K (1989 by Vladimir Drozdov) *Pentagon 128K (1991) *Pentagon 128K 2+ (1991 by ATM) *Pentagon 128K 3+ (1993 by Solon) *Pentagon 1024SL v1.x (2005 by Alex Zhabin) *Pentagon-1024SL v2.x (2006 by Alex Zhabin) *Pentagon ver.2.666 (2009 by Alex Zhabin) The Pentagon 1024SL v2.3 included most of the upgrades of the standard Spectrum architecture, including 1024 KB RAM, Beta 128 Disk Interface and ZX-BUS slots (especially for IDE and General ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Electronic Kit
An electronic kit is a package of electrical components used to build an electronic device. Generally, kits are composed of electronic components, a circuit diagram (schematic), assembly instructions and often a printed circuit board (PCB) or another type of prototyping board. There are two types of kit. Some build a single device or system. Other types used for education demonstrate a range of circuits. Theses will include a solderless construction board of some type, such as: * Components mounted in plastic blocks with side contacts, that are held together in a base, e.g. Denshi blocks * Springs on a card board, the springs trap wire leads or component leads, such as Philips EE electronic experiment kits. These are a cheap and flexible option * Professional type prototyping boards, ( breadboards) into which component leads are inserted, following documentation of the "kit". The first type of kits, those for the construction of a single device, normally use a PCB on which co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bratislava
Bratislava (, also ; ; german: Preßburg/Pressburg ; hu, Pozsony) is the Capital city, capital and largest city of Slovakia. Officially, the population of the city is about 475,000; however, it is estimated to be more than 660,000 — approximately 140% of the official figures. Bratislava is in southwestern Slovakia at the foot of the Little Carpathians, occupying both banks of the River Danube and the left bank of the Morava (river), River Morava. Bordering Austria and Hungary, it is the only national capital that borders two sovereign states. The city's history has been influenced by people of many nations and religions, including Austrians, Bulgarians, Croats, Czechs, Germans, Hungarian people, Hungarians, Jews, Romani people, Romani, Serbs and Slovaks. It was the coronation site and legislative center and capital of the Kingdom of Hungary from 1536 to 1783; eleven King of Hungary, Hungarian kings and eight queens were crowned in St Martin's Cathedral, Bratislava, St Martin' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Processing Unit
A central processing unit (CPU), also called a central processor, main processor or just processor, is the electronic circuitry that executes instructions comprising a computer program. The CPU performs basic arithmetic, logic, controlling, and input/output (I/O) operations specified by the instructions in the program. This contrasts with external components such as main memory and I/O circuitry, and specialized processors such as graphics processing units (GPUs). The form, design, and implementation of CPUs have changed over time, but their fundamental operation remains almost unchanged. Principal components of a CPU include the arithmetic–logic unit (ALU) that performs arithmetic and logic operations, processor registers that supply operands to the ALU and store the results of ALU operations, and a control unit that orchestrates the fetching (from memory), decoding and execution (of instructions) by directing the coordinated operations of the ALU, registers and other co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zilog Z80
The Z80 is an 8-bit microprocessor introduced by Zilog as the startup company's first product. The Z80 was conceived by Federico Faggin in late 1974 and developed by him and his 11 employees starting in early 1975. The first working samples were delivered in March 1976, and it was officially introduced on the market in July 1976. With the revenue from the Z80, the company built its own chip factories and grew to over a thousand employees over the following two years. The Zilog Z80 is a software-compatible extension and enhancement of the Intel 8080 and, like it, was mainly aimed at embedded systems. Although used in that role, the Z80 also became one of the most widely used CPUs in desktop computers and home computers from the 1970s to the mid-1980s. It was also common in military applications, musical equipment such as synthesizers (like the Roland Jupiter-8), and coin-operated arcade games of the late 1970s and early 1980s, including '' Pac-Man''. Zilog licensed the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
U880
The U880 is an 8-bit microprocessor that was manufactured by VEB Mikroelektronik "Karl Marx" Erfurt (abbreviated as MME; part of Kombinat Mikroelektronik Erfurt) in the German Democratic Republic. Production of the U880 started in 1980 at VEB Funkwerk Erfurt (abbreviated as FWE; the plant was renamed to VEB Mikroelektronik "Karl Marx" in 1983). The U880 is an unlicensed clone of the Zilog Z80 microprocessor, also supporting illegal opcodes and bugs, except for very minor differences like not setting the CY flag for the command (when L goes zero). Processor variants The U880 was manufactured in NMOS technology and encased in a plastic DIL40 package with a pin spacing of 2.5 mm (export versions had the Western pin spacing of 2.54 mm; Russian variants also came in a ceramic package). The military version of the U880 has an additional "MEK 4" marking. Image:Robotron UA880D MME 1.jpg, UA880D (1986) Image:Robotron UB880D MME S1 1.jpg, UB880D S1 hobbyist version ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skalica
Skalica (german: Skalitz, hu, Szakolca, Latin: ''Sakolcium'') is the largest town in Skalica District in western Slovakia in the Záhorie region. Located near the Czech border, Skalica has a population of around 15,000. Etymology The name is derived from Slovak word ''skala'' (a rock) referring to the cliffs the inhabitants built their settlement over. The first written record of Skalica was made in 1217 as ''Szacholca''. History The site has been inhabited since 4000 BC and was part of the Great Moravian Empire. From the second half of the 10th century until 1918, it was part of the Kingdom of Hungary. The settlement developed around a triangular plaza, which was rare during the Middle Ages. Its town privileges were conferred in 1372 by King Louis I of Hungary. In 1428 Skalica became a bastion for the Hussites; during the Hussite Wars, the majority of its then predominantly German-speaking populace fled or was exiled. Many Habaners (adherents of a sect similar to Anabaptism) s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
16-bit Computer
16-bit microcomputers are microcomputers that use 16-bit microprocessors. A 16-bit register can store 216 different values. The range of integer values that can be stored in 16 bits depends on the integer representation used. With the two most common representations, the range is 0 through 65,535 (216 − 1) for representation as an (unsigned) binary number, and −32,768 (−1 × 215) through 32,767 (215 − 1) for representation as two's complement. Since 216 is 65,536, a processor with 16-bit memory addresses can directly access 64 KB (65,536 bytes) of byte-addressable memory. If a system uses segmentation with 16-bit segment offsets, more can be accessed. 16-bit architecture The MIT Whirlwind ( 1951) was quite possibly the first-ever 16-bit computer. It was an unusual word size for the era; most systems used six-bit character code and used a word length of some multiple of 6-bits. This changed with the effort to introduce ASCII, which used a 7-bit code and naturally led t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Top Gun (video Game)
The list of ''Top Gun'' video games has several licensed video games based on the film series, which started with ''Top Gun'' (1986). ''Top Gun'' (Ocean game) The Ocean Software version of ''Top Gun'' was released for various home computer formats in 1986. It was released for Atari ST, Commodore 64, ZX Spectrum, and Amstrad CPC. It is a one-on-one dogfighting simulator with 3D wire-frame model graphics, unique among more traditional sprite-based graphics and straightforward gameplay of the subsequent games. It has one and two-player modes; in the former, the opposing aircraft is flown by the computer. ''Top Gun'' (Konami game) The Konami version of ''Top Gun'' was released for Nintendo Entertainment System (NES) in November 1987 in the United States. It is an adaptation of an earlier arcade game by Konami titled ''Vs. Top Gun'', released for the Nintendo VS. System. Two million copies of the NES version were sold. Piloting an F-14 Tomcat fighter, the player, as the film' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
