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39-593: Wayne Green was the founder and publisher of BYTE magazine , one of the influential microcomputer magazines of the 1970s. After putting out four issues, in November 1975 Green came to work and found that his ex-wife and the rest of the Byte magazine staff had moved out of his office and had taken the January issue with them. Consequently, the January 1976 issue had Virginia Green listed as publisher instead of Wayne Green. Green

78-423: A microprocessor . The computer also includes memory and input/output (I/O) circuitry together mounted on a printed circuit board (PCB). Microcomputers became popular in the 1970s and 1980s with the advent of increasingly powerful microprocessors. The predecessors to these computers, mainframes and minicomputers , were comparatively much larger and more expensive (though indeed present-day mainframes such as

117-870: A proof of concept to demonstrate what such a simple device could do. As microprocessors and semiconductor memory became less expensive, microcomputers grew cheaper and easier to use. All these improvements in cost and usability resulted in an explosion in their popularity during the late 1970s and early 1980s. A large number of computer makers packaged microcomputers for use in small business applications. By 1979, many companies such as Cromemco , Processor Technology , IMSAI , North Star Computers , Southwest Technical Products Corporation , Ohio Scientific , Altos Computer Systems , Morrow Designs and others produced systems designed for resourceful end users or consulting firms to deliver business systems such as accounting, database management and word processing to small businesses. This allowed businesses unable to afford leasing of

156-704: A Magazine for TRS-80 users, InCider a magazine for Apple II users, Hot CoCo a magazine for TRS-80 Color Computers , RUN a magazine for Commodore 64 users and many others. Even more than Byte magazine, kilobaud contained articles written for people who were building their own 8-bit microcomputers at home, or were writing homebrew software for these systems. kilobaud, (much more than Byte) contained articles written for electronic engineers (or hobbyists interested in electronics ), rather than for people who were technically interested in computers but not in building their own computer from scratch . Articles like "Two Hobbies: Model Railroading and Computing" and

195-587: A computer based on a microprocessor – the Intel 8008 8-bit microprocessor. This Micral-N was marketed in early 1973 as a "Micro-ordinateur" or microcomputer , mainly for scientific and process-control applications. About a hundred Micral-N were installed in the next two years, followed by a new version based on the Intel 8080. Meanwhile, another French team developed the Alvan, a small computer for office automation which found clients in banks and other sectors. The first version

234-463: A computer had to be big in size to be powerful, and thus decided to market them as calculators. Additionally, at that time, people were more likely to buy calculators than computers, and, purchasing agents also preferred the term "calculator" because purchasing a "computer" required additional layers of purchasing authority approvals. The Datapoint 2200 , made by CTC in 1970, was also comparable to microcomputers. While it contains no microprocessor,

273-422: A disk operating system included in a series of programmable read-only memory chips (PROMs); 8 Kilobytes of RAM; IBM's Basic Assembly Language (BAL); a hard drive; a color display; a printer output; a 150 bit/s serial interface for connecting to a mainframe; and even the world's first microcomputer front panel. In early 1973, Sord Computer Corporation (now Toshiba Personal Computer System Corporation ) completed

312-419: A minicomputer or time-sharing service the opportunity to automate business functions, without (usually) hiring a full-time staff to operate the computers. A representative system of this era would have used an S100 bus , an 8-bit processor such as an Intel 8080 or Zilog Z80 , and either CP/M or MP/M operating system. The increasing availability and power of desktop computers for personal use attracted

351-557: A time, although they can often be modified with software or hardware to concurrently serve more than one user. Microcomputers fit well on or under desks or tables, so that they are within easy access of users. Bigger computers like minicomputers , mainframes , and supercomputers take up large cabinets or even dedicated rooms. A microcomputer comes equipped with at least one type of data storage, usually RAM . Although some microcomputers (particularly early 8-bit home micros) perform tasks using RAM alone, some form of secondary storage

390-806: Is normally desirable. In the early days of home micros, this was often a data cassette deck (in many cases as an external unit). Later, secondary storage (particularly in the form of floppy disk and hard disk drives) were built into the microcomputer case. Although they did not contain any microprocessors, but were built around transistor-transistor logic (TTL), Hewlett-Packard calculators as far back as 1968 had various levels of programmability comparable to microcomputers. The HP 9100B (1968) had rudimentary conditional (if) statements, statement line numbers, jump statements ( go to ), registers that could be used as variables, and primitive subroutines. The programming language resembled assembly language in many ways. Later models incrementally added more features, including

429-523: Is sometimes called the first generation of microcomputers. Many companies such as DEC , National Semiconductor , Texas Instruments offered their microcomputers for use in terminal control, peripheral device interface control and industrial machine control. There were also machines for engineering development and hobbyist personal use. In 1975, the Processor Technology SOL-20 was designed, which consisted of one board which included all

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468-446: The BASIC programming language (HP 9830A in 1971). Some models had tape storage and small printers. However, displays were limited to one line at a time. The HP 9100A was referred to as a personal computer in an advertisement in a 1968 Science magazine, but that advertisement was quickly dropped. HP was reluctant to sell them as "computers" because the perception at that time was that

507-657: The Federal Communications Commission in the Amateur Radio Service with the callsign W2NSD, he was involved in a number of controversies and disputes in the Ham Radio world, notably with the ARRL and CQ magazines. Such controversies also occurred in the computer world; an advertisement for 80 Micro began "You may love Wayne Green ... you may hate him ... but you have to admit he has vision". It promised that

546-660: The IBM System z machines use one or more custom microprocessors as their CPUs). Many microcomputers (when equipped with a keyboard and screen for input and output) are also personal computers (in the generic sense). An early use of the term "personal computer" in 1962 predates microprocessor-based designs. (See "Personal Computer: Computers at Companies" reference below) . A "microcomputer" used as an embedded control system may have no human-readable input and output devices. "Personal computer" may be used generically or may denote an IBM PC compatible machine. The abbreviation "micro"

585-586: The Micral N. The same year the company filed their patents with the term "Micro-ordinateur", a literal equivalent of "Microcomputer", to designate a solid state machine designed with a microprocessor. In the US the earliest models such as the Altair 8800 were often sold as kits to be assembled by the user, and came with as little as 256 bytes of RAM , and no input/output devices other than indicator lights and switches, useful as

624-552: The instruction set of its custom TTL processor was the basis of the instruction set for the Intel 8008 , and for practical purposes the system behaves approximately as if it contains an 8008. This is because Intel was the contractor in charge of developing the Datapoint's CPU, but ultimately CTC rejected the 8008 design because it needed 20 support chips. Another early system, the Kenbak-1 ,

663-545: The Altair itself was only a mild commercial success, it helped spark a huge industry. By 1977, the introduction of the second microcomputer generation as consumer goods , known as home computers , made them considerably easier to use than their predecessors because their predecessors' operation often demanded thorough familiarity with practical electronics. The ability to connect to a monitor (screen) or TV set allowed visual manipulation of text and numbers. The BASIC language, which

702-615: The IBM PC itself was widely imitated, as well as the term. The component parts were commonly available to producers and the BIOS was reverse engineered through cleanroom design techniques. IBM PC compatible "clones" became commonplace, and the terms "personal computer", and especially "PC", stuck with the general public, often specifically for a computer compatible with DOS (or nowadays Windows). Monitors, keyboards and other devices for input and output may be integrated or separate. Computer memory in

741-513: The NSD in his amateur callsign. As of 2011 he lived in his wife's farmhouse in Hancock, New Hampshire and maintained a website with content from his online bookstore. This biography of an American publisher is a stub . You can help Misplaced Pages by expanding it . Microcomputing A microcomputer is a small, relatively inexpensive computer having a central processing unit (CPU) made out of

780-685: The SMP80/08, which used the Intel 8008 microprocessor. The SMP80/08, however, did not have a commercial release. After the first general-purpose microprocessor, the Intel 8080 , was announced in April 1974, Sord announced the SMP80/x, the first microcomputer to use the 8080, in May 1974. Virtually all early microcomputers were essentially boxes with lights and switches; one had to read and understand binary numbers and machine language to program and use them (the Datapoint 2200

819-488: The article (written by Don Lancaster ) "Building a cheap video display for your Heathkit H-8 " (a computer you could build yourself from a kit ) are good examples. In the May 1982 issue an article about building the Sinclair ZX-81 kit, the first, (and probably last) "mainstream" " do-it-yourself " computer kit was published. Wayne Green Wayne Sanger Green II (September 3, 1922 – September 13, 2013)

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858-439: The attention of more software developers. As the industry matured, the market for personal computers standardized around IBM PC compatibles running DOS , and later Windows . Modern desktop computers, video game consoles , laptops , tablet PCs , and many types of handheld devices , including mobile phones , pocket calculators , and industrial embedded systems , may all be considered examples of microcomputers according to

897-515: The definition given above. By the early 2000s, everyday use of the expression "microcomputer" (and in particular "micro") declined significantly from its peak in the mid-1980s. The term is most commonly associated with the most popular 8-bit home computers (such as the Apple II , ZX Spectrum , Commodore 64 , BBC Micro , and TRS-80 ) and small-business CP/M -based microcomputers. In colloquial usage, "microcomputer" has been largely supplanted by

936-458: The end of 1980 the subtitle "for business...education...FUN" was added. Later, after 1981, the "kilobaud" denominated was dropped altogether and the magazine was now simply called "Microcomputing" with the subtitle, "a wayne green publication". In 1984, the magazine collapsed. After the success of kilobaud , Wayne Green diversified with magazines targeted to specific brands of home computers , such as 80-Microcomputing (also known as 80-Micro )

975-421: The first magazines was kilobaud. The Computer Hobbyist Magazine (Jan 1977). These issues are unique for having a full index of the contents on the front cover but no illustrations (photographs). Later issues did have illustrations but also still had a full index on the cover, (a feature that remained for many years). The title was now shortened to only read "Kilobaud Microcomputing". From the beginning of 1979 to

1014-498: The form of RAM , and at least one other less volatile, memory storage device are usually combined with the CPU on a system bus in one unit. Other devices that make up a complete microcomputer system include batteries, a power supply unit, a keyboard and various input/output devices used to convey information to and from a human operator ( printers , monitors , human interface devices ). Microcomputers are designed to serve only one user at

1053-429: The magazine would "tell you the truth" because "Wayne Green has never been one to mince words", adding "of course, 80 Microcomputing has the editorial fireworks from Wayne that the industry has come to expect". In his editorial in the inaugural issue of 80 Microcomputing, he said, "My outspokenness aggravates a lot of people, but...if I don't kick ass...I don't get results." He used the backronym "Never Say Die" for

1092-487: The minicomputer's CPU with one integrated microprocessor chip . In 1973, the French Institut National de la Recherche Agronomique (INRA) was looking for a computer able to measure agricultural hygrometry . To answer this request, a team of French engineers of the computer technology company R2E, led by its Head of Development, François Gernelle , created the first available microprocessor-based microcomputer,

1131-464: The parts of the computer system. The SOL-20 had built-in EPROM software which eliminated the need for rows of switches and lights. The MITS Altair just mentioned played an instrumental role in sparking significant hobbyist interest, which itself eventually led to the founding and success of many well-known personal computer hardware and software companies, such as Microsoft and Apple Computer . Although

1170-448: The term " personal computer " or "PC", which specifies a computer that has been designed to be used by one individual at a time, a term first coined in 1959. IBM first promoted the term "personal computer" to differentiate the IBM PC from CP/M -based microcomputers likewise targeted at the small-business market, and also IBM's own mainframes and minicomputers. However, following its release,

1209-506: Was a need for a magazine aimed at beginners in computing, I started Kilobaud Microcomputing in January 1977." In the early 1980s, he assisted in the creation of the Brazilian microcomputing magazine, Micro Sistemas (in Portuguese) . He sold five of his magazines to CW Communications in 1983, and his publishing company Wayne Green, Inc. subsequently merged with them. Licensed by

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1248-487: Was a striking exception, bearing a modern design based on a monitor, keyboard, and tape and disk drives). Of the early "box of switches"-type microcomputers, the MITS Altair 8800 (1975) was arguably the most famous. Most of these simple, early microcomputers were sold as electronic kits —bags full of loose components which the buyer had to solder together before the system could be used. The period from about 1971 to 1976

1287-404: Was an American publisher, writer, and consultant. Green was editor of CQ magazine before he went on to found 73 , 80 Micro , Byte , CD Review , Cold Fusion , Kilobaud Microcomputing , RUN , InCider , and Pico , as well as publishing books and running Instant Software . In his editorial in the inaugural issue of 80 Microcomputing he said, "The first magazine I published

1326-525: Was based on LSI chips with an Intel 8008 as peripheral controller (keyboard, monitor and printer), before adopting the Zilog Z80 as main processor. In late 1972, a Sacramento State University team led by Bill Pentz built the Sac State 8008 computer, able to handle thousands of patients' medical records. The Sac State 8008 was designed with the Intel 8008. It had a full set of hardware and software components :

1365-536: Was common during the 1970s and 1980s, but has since fallen out of common usage. The term microcomputer came into popular use after the introduction of the minicomputer , although Isaac Asimov used the term in his short story " The Dying Night " as early as 1956 (published in The Magazine of Fantasy and Science Fiction in July that year). Most notably, the microcomputer replaced the many separate components that made up

1404-469: Was easier to learn and use than raw machine language, became a standard feature. These features were already common in minicomputers , with which many hobbyists and early produces were familiar. In 1979, the launch of the VisiCalc spreadsheet (initially for the Apple II ) first turned the microcomputer from a hobby for computer enthusiasts into a business tool. After the 1981 release by IBM of its IBM PC ,

1443-407: Was in 1952 about amateur radio Teletype. Later I became editor of CQ , a ham radio magazine. I started my own magazine for hams in 1960, that was 73 magazine. 73 is now the world's largest ham publication, with subscribers in over 200 countries. When MITS put the first microcomputer kit on the market in 1975 I organized and did most of the work to get Byte magazine started. When I felt there

1482-414: Was not happy with this development, so he left to start a new magazine to compete with the fledgling Byte . He wanted to call it "KiloByte" to trump Byte . But the people of Byte quickly trademarked KILOBYTE as a cartoon series in Byte magazine. So he named the new magazine "kilo baud " instead, a title Green admitted was largely meaningless. The magazine was first published in 1977. The full title for

1521-429: Was released in 1971. Like the Datapoint 2200, it used small-scale integrated transistor–transistor logic instead of a microprocessor. It was marketed as an educational and hobbyist tool, but it was not a commercial success; production ceased shortly after introduction. In late 1972, a French team headed by François Gernelle within a small company, Réalisations & Etudes Electroniques (R2E), developed and patented

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