Instruct: Given a question, retrieve documents that can help answer the question.
Query: What was the memory of the first Amstrad CPC?
The ' ("" - which means "small computer" - being a rather literal German translation of the English "microcomputer") is a clone of the Amstrad CPC built by East Germany's ' in October 1989. Although the machine included various substitutes and emulations of an Amstrad CPC's hardware, the machine is largely compatible with Amstrad CPC software. It is equipped with 64 KB memory and a CPC6128's firmware customized to the modified hardware, including an unmodified copy of Locomotive BASIC 1.1. The KC compact is the last 8-bit computer produced in East Germany.
There is debate about what machine was the first personal computer, the Altair 8800 (1975), the Mark-8 (1974), or even back to Kenbak-1 (1971). The computer in the January 1975 issue of "Popular Electronics" captured the attention of the 400,000 or so readers. Before then, home computers were lucky to sell a hundred units. The Altair sold thousands in the first year. By the end of 1975 there were a dozen companies producing computer kits and peripherals using the Altair circuit bus, later renamed the S-100 bus and set as an IEEE standard.
While the subject of exactly which device was the first microprocessor is contentious, partly due to lack of agreement on the exact definition of the term "microprocessor", it is largely undisputed that the first single-chip microprocessor was the Intel 4004, designed and realized by Ted Hoff, Federico Faggin, and Stanley Mazor at Intel. It should be noted that Tadashi Sasaki and Masatoshi Shima of Busicom, a calculator manufacturer, had the initial insight that the CPU be a 4-bit integrated circuit, and that Intel could supply the ICs.
While the earliest microprocessor ICs literally contained only the processor, i.e. the central processing unit, of a computer, their progressive development naturally led to chips containing most or all of the internal electronic parts of a computer. The integrated circuit in the image on the right, for example, an Intel 8742, is an 8-bit microcontroller that includes a CPU running at 12 MHz, 128 bytes of RAM, 2048 bytes of EPROM, and I/O in the same chip.
Also in 1973 Hewlett Packard introduced fully BASIC programmable microcomputers that fit entirely on top of a desk, including a keyboard, a small one-line display, and printer. The Wang 2200 microcomputer of 1973 had a full-size cathode ray tube (CRT) and cassette tape storage. These were generally expensive specialized computers sold for business or scientific uses. The introduction of the microprocessor, a single chip with all the circuitry that formerly occupied large cabinets, led to the proliferation of personal computers after 1975.
1974 saw the introduction of what is considered by many to be the first true "personal computer", the Altair 8800 created by Micro Instrumentation and Telemetry Systems (MITS). Based on the 8-bit Intel 8080 Microprocessor, the Altair is widely recognized as the spark that ignited the microcomputer revolution as the first commercially successful personal computer. The computer bus designed for the Altair was to become a "de facto" standard in the form of the S-100 bus, and the first programming language for the machine was Microsoft's founding product, Altair BASIC.
Since the introduction of the first commercially available microprocessor, the Intel 4004 in 1970, and the first widely used microprocessor, the Intel 8080 in 1974, this class of CPUs has almost completely overtaken all other central processing unit implementation methods. Mainframe and minicomputer manufacturers of the time launched proprietary IC development programs to upgrade their older computer architectures, and eventually produced instruction set compatible microprocessors that were backward-compatible with their older hardware and software. Combined with the advent and eventual success of the ubiquitous personal computer, the term "CPU" is now applied almost exclusively to microprocessors. Several CPUs (denoted "cores") can be combined in a single processing chip.
Previous generations of CPUs were implemented as discrete components and numerous small integrated circuits (ICs) on one or more circuit boards. Microprocessors, on the other hand, are CPUs manufactured on a very small number of ICs; usually just one. The overall smaller CPU size, as a result of being implemented on a single die, means faster switching time because of physical factors like decreased gate parasitic capacitance. This has allowed synchronous microprocessors to have clock rates ranging from tens of megahertz to several gigahertz. Additionally, the ability to construct exceedingly small transistors on an IC has increased the complexity and number of transistors in a single CPU many fold. This widely observed trend is described by Moore's law, which had proven to be a fairly accurate predictor of the growth of CPU (and other IC) complexity until 2016.
The Intel 8008 was the world's first single-chip 8-bit CPU and, like the 4004, was built with p-channel SGT. The 8008 development was originally assigned to Hal Feeney in March 1970 but was suspended until the 4004 was completed. It was resumed in January 1971 under Faggin's direction utilizing the basic circuits and methodology he had developed for the 4004, with Hal Feeney doing the chip design. The CPU architecture of the 8008 was originally created by CTC, Inc., to power the Datapoint 2200 intelligent terminal.
Over the next seven years, the phrase had gained enough recognition that "Byte" magazine referred to its readers in its first edition as "[in] the "personal computing" field", and "Creative Computing" defined the personal computer as a "non-(time)shared system containing sufficient processing power and storage capabilities to satisfy the needs of an individual user." In 1977, three new pre-assembled small computers hit the markets which "Byte" would refer to as the "1977 Trinity" of personal computing. The Apple II and the PET 2001 were advertised as "personal computers", while the TRS-80 was described as a microcomputer used for household tasks including ""personal" financial management". By 1979, over half a million microcomputers were sold and the youth of the day had a new concept of the personal computer.
Philco had developed and produced a miniature transistorized computer brain for the Navy's jet fighter planes in 1955, which was called the "Transac" (C-1000, C-1100) and which stood for "Transistor Automatic Computer". It used Philco's high-frequency surface-barriers transistors in its circuitry design.
Chrysler and Philco announced that they had developed and produced the world's first all-transistor car radio and it was announced in the April 28, 1955, edition of the "Wall Street Journal". Chrysler made the all-transistor car radio, Mopar model 914HR, available in Fall 1955 for its new line of 1956 Chrysler and Imperial cars, as a $150 option. Philco's radio manufacturing plant in Sandusky, Ohio, had produced the all-transistor car radio unit for the Chrysler Corporation, which also used Philco's surface-barrier transistors in its circuitry design.
In 1955, Philco developed and produced the world's first all-transistor phonograph models TPA-1 and TPA-2. This was originally announced in the June 28, 1955, edition of the "Wall Street Journal". Philco had begun selling these all-transistor phonographs in the fall of 1955 for $59.95. The October 1955 issue of "Radio & Television News" magazine (page 41) printed a full-page, detailed article, on Philco's new consumer product all-transistor phonograph. The Philco all-transistor portable phonograph TPA-1 and TPA-2 models played only 45rpm records and used four 1.5v "D" batteries for its power supply. "TPA" stands for "Transistor Phonograph Amplifier". Its circuitry used three Philco germanium PNP alloy-fused junction audio frequency transistors. After the 1956 season ended, Philco decided to discontinue the all-transistor portable 45rpm phonograph models, for transistors were too expensive compared to vacuum tubes.
Early attempts at digital audio workstations in the 1970s and 1980s faced limitations such as the high price of storage, and the vastly slower processing and disk speeds of the time. In 1978, Soundstream (who had made one of the first commercially available digital audio tape recorders in 1977) built what could be considered the first digital audio workstation using some of the most current computer hardware of the time. The "Digital Editing System", as Soundstream called it, consisted of a DEC PDP-11/60 minicomputer running a custom software package called DAP (Digital Audio Processor), a Braegen 14"-platter hard disk drive, a storage oscilloscope to display audio waveforms for editing, and a video display terminal for controlling the system. Interface cards that plugged into the PDP-11's Unibus slots (the "Digital Audio Interface", or "DAI") provided analog and digital audio input and output for interfacing to Soundstream's digital recorders and conventional analog tape recorders. The DAP software could perform edits to the audio recorded on the system's hard disks and provide effects such as crossfades.
Thermal transfer printing was invented by SATO corporation, a Japanese company. They produced the world's first thermal transfer label printer, SATO M-2311, in 1981.The concept of a single-chip microprocessor CPU (central processing unit) was conceived in a 1968 meeting in Japan between Sharp engineer Tadashi Sasaki and an unnamed female software engineering researcher from Nara Women's College. He discussed the concept at a brainstorming meeting that was held in Japan. Sasaki attributes the basic invention to break the chipset of a calculator into four parts with ROM (4001), RAM (4002), shift registers (4003) and CPU (4004) to an unnamed woman, a software engineering researcher from Nara Women's College, who was present at the meeting. Sasaki then had his first meeting with Noyce in 1968. Sasaki discussed the microprocessor concept with Busicom and Intel in 1968, and presented the woman's four-division chipset concept to Intel and Busicom. This provided the basis for the single-chip microprocessor design of the Intel 4004. He was also involved in the development of the Busicom 141-PF desktop calculator which led to the 4004's creation. Sasaki thus played a key role in the creation of the first microprocessor.
The chip design started in April 1970, when Federico Faggin joined Intel, and was completed under his leadership in January 1971. The first commercial sale of the fully operational 4004 occurred in March 1971 to Busicom Corp. of Japan for which it was originally designed and built as a custom chip. In mid-November of the same year, with the prophetic ad "Announcing a new era in integrated electronics", the 4004 was made commercially available to the general market. The 4004 was the first commercially available monolithic processor, fully integrated in one small chip. Such a feat of integration was made possible by the use of the then-new silicon gate technology for integrated circuits, originally developed by Faggin (with Tom Klein) at Fairchild Semiconductor in 1968, which allowed twice the number of random-logic transistors and an increase in speed by a factor of five compared to the incumbent MOS aluminum gate technology. Faggin also invented the bootstrap load with silicon gate and the “buried contact”, improving speed and circuit density compared with aluminum gate.
The first production IBM hard disk drive, the 350 disk storage, shipped in 1957 as a component of the IBM 305 RAMAC system. It was approximately the size of two medium-sized refrigerators and stored five million six-bit characters (3.75 megabytes) on a stack of 50 disks.
In 1981, he wired together the backplanes of two DEC VAX-11/780's and made the first multi-CPU Unix computer, preceding DEC's dual processor VAX-11/782. The operating system was based on the 4.2 BSD kernel, and the modifications thus made eventually made it into the 4.3 BSD Unix release. At the beginning of the 4.3 BSD user manuals, Bill Joy wrote a special note of thanks to GHG for being courageous enough to put the multi-CPU kernel into a production environment before anyone else did. (However, the frequent crashes for a while inspired the writing of many humorous text files by the Purdue University Electrical Engineering student body, such as "The VAX had a Blowout", to be sung to the tune of London Bridge is Falling Down). The development of the Dual-CPU Unix system was the subject of Goble's Master's thesis.
The RAMAC disk drive created a new level in the computer data hierarchy, today known as secondary storage, less expensive and slower than main memory (then typically core or drum) but faster and more expensive than tape drives. Subsequently there was a period of about 20 years in which other technologies competed with disks in the secondary storage marketplace, for example tape strips, e.g., NCR CRAM, tape cartridges, e.g., IBM 3850, and drums, e.g., Burroughs B430, UNIVAC FASTRAND, but all ultimately were displaced by HDDs. Today SSDs compete with HDDs in the marketplace.
Following the 1947 invention of the cathode-ray tube amusement device, the earliest known interactive electronic game as well as the first to use an electronic display, the first true video games were created in the early 1950s. Initially created as technology demonstrations, such as the "Bertie the Brain" and Nimrod computers in 1950 and 1951, video games also became the purview of academic research. A series of games, generally simulating real-world board games, were created at various research institutions to explore programming, human–computer interaction, and computer algorithms. These include "OXO" and Christopher Strachey's draughts program in 1952, the first software-based games to incorporate a CRT display, and several chess and checkers programs. Possibly the first video game created simply for entertainment was 1958's "Tennis for Two", featuring moving graphics on an oscilloscope. As computing technology improved over time, computers became smaller and faster, and the ability to work on them was opened up to university employees and undergraduate students by the end of the 1950s. These new programmers began to create games for non-academic purposes, leading up to the 1962 release of "Spacewar!" as one of the earliest known digital computer games to be available outside a single research institute.
The Texas Instruments Professional Computer (TIPC) and the Texas Instruments Portable Professional Computer (TIPPC) were devices that were both released on January 31, 1983. The TIPC was a desktop PC and the TIPPC was a fully compatible, portable version of the TIPC. Both computers were most often used by white-collar information workers and professionals who needed to gather, manipulate and transmit information. Texas Instruments (TI) was the first company to release videotape training videos for their computers.
That same year saw the release of the Magnavox Odyssey, the first home video game console which could be connected to a television set. The inventor, Ralph H. Baer, had initially had the idea in 1951 to make an interactive game on a television set. Unable to do so with the technological constraints at the time, he began work on a device that would attach to a television set and display games in 1966, and the "Brown Box", the last prototype of seven, was licensed to Magnavox to adapt and produce. They announced the console in May 1972, and it went on sale that September. The console and its games featured numerous innovations beyond being the first video game device for home consumers: it was the first game to use a raster-scan video display, or television set, directly displayed via modification of a video signal; it was also the first video gaming device to be displayed in a television commercial. It sold for US$100 and shipped with several games, including "Table tennis", which Bushnell had seen a demo of and which "Pong" had been based on. The Odyssey sold over 100,000 units in 1972, and more than 350,000 by the end of 1975, buoyed by the popularity of the table tennis game, in turn driven by the success of "Pong". "Pong" and the Odyssey kicked off a new era of video gaming, with numerous other competitors starting up in the video game industry as it grew in popularity.
The history of game making begins with the development of the first video games, although which video game is the first depends on the definition of "video game". The first games created had little entertainment value, and their development focus was separate from user experience—in fact, these games required mainframe computers to play them. "OXO", written by Alexander S. Douglas in 1952, was the first computer game to use a digital display. In 1958, a game called "Tennis for Two", which displayed its output on an oscilloscope, was made by Willy Higinbotham, a physicist working at the Brookhaven National Laboratory. In 1961, a mainframe computer game called "Spacewar!" was developed by a group of Massachusetts Institute of Technology students led by Steve Russell.
Compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony and released in 1982. The format was originally developed to store and play only sound recordings (CD-DA) but was later adapted for storage of data (CD-ROM). Several other formats were further derived from these, including write-once audio and data storage (CD-R), rewritable media (CD-RW), Video Compact Disc (VCD), Super Video Compact Disc (SVCD), Photo CD, PictureCD, CD-i, and Enhanced Music CD. The first commercially available audio CD player, the Sony CDP-101, was released October 1982 in Japan.
The Copland development was hampered by many missed deadlines. The release date was first pushed back to the end of 1995, then to mid-1996, late 1996, and finally to the end of 1997. With a dedicated team of 500 software engineers and an annual budget of $250 million, Apple executives began to grow impatient with the project continually falling behind schedule. At the Worldwide Developers Conference in January 1997, Apple chief executive officer (CEO) Gil Amelio announced that, rather than release Copland as one monolithic release, Copland features would be phased into the Mac OS following a six-month release cycle. These updates began with Mac OS 7.6, released during WWDC. Mac OS 8.0, released six months later, continued to integrate Copland technologies into the Mac OS.
"InfoWorld" criticized the computer's game library as mediocre. TI discouraged third-party development for the 99/4A, including games, but did not license popular arcade games like "Zaxxon" or "Frogger".
In 1977 groups within Texas Instruments were designing a video game console, a home computer to compete against the TRS-80 and Apple II, and a high-end business personal computer with a hard drive. The first two groups merged at TI's consumer products division in Lubbock, Texas; the 99/4's (according to Walden C. Rhines) "ultracheap keyboard", RF modulator, and ROM cartridges came from the console design. Others within the company persuaded the Lubbock group to use TI's TMS9900 CPU.
The CPC 464 was the first personal home computer built by Amstrad in 1984. It was one of the bestselling and best produced microcomputers, with more than 2 million units sold in Europe. The British microcomputer boom had already peaked before Amstrad announced the CPC 464 (which stood for Colour Personal Computer) which they then released a mere 9 months later.
Sugar founded Amstrad (AMS (his initials) Trading) in 1968. The company began as a general importer/exporter and wholesaler, but soon specialised in consumer electronics. By 1970, the first manufacturing venture was underway. He achieved lower production prices by using injection moulding plastics for hi-fi turntable covers, severely undercutting competitors who used vacuum-forming processes. Manufacturing capacity was soon expanded to include the production of audio amplifiers and tuners.
In 1980, Amstrad was listed on the London Stock Exchange and during the 1980s Amstrad doubled its profit and market value every year. By 1984, recognising the opportunity of the home computer era, Amstrad launched an 8-bit machine, the Amstrad CPC 464. Although the CPC range were attractive machines, with CP/M-capability and a good BASIC interpreter, it had to compete with its arch-rivals, the more graphically complex Commodore 64 and the popular Sinclair ZX Spectrum, not to mention the highly sophisticated BBC Micro. Despite this, three million units were sold worldwide with a long production life of eight years. It inspired an East German version with Z80 clone processors. In 1985, Sugar had another major breakthrough with the launch of the Amstrad PCW 8256 word processor which retailed at over £300, but was still considerably cheaper than rival machines (such as the Apple Macintosh Plus, which retailed at $2599). In 1986 Amstrad bought the rights to the Sinclair computer product line and produced two more ZX Spectrum models in a similar style to their CPC machines. It also developed the PC1512, a PC compatible computer, which became quite popular in Europe and was the first in a line of Amstrad PCs.
The CPC 464 was eventually powered by the Zilog Z80 processor after the original attempts to use the 6502 processor, being used in the Commodore 64 and Apple II, failed. The Z80 ran at 4 MHz, had 64K of memory and ran AMSDOS, Amstrad's own OS. The unit included a built in tape drive and the choice of a green or colour monitor.
The CPC 464 had 3 display modes.
After the successful release of the CPC464, consumers were constantly asking for two improvements: more memory and an internal disk drive. For Amstrad, the latter was easier to realize. At the deliberately low-key introduction of the CPC664 in May 1985, the machine was positioned not only as the lowest-cost disk system but even the lowest-cost CP/M 2.2 machine. In the Amstrad CPC product range the CPC664 complemented the CPC464 which was neither discontinued nor reduced in price.