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Regency Systems R2C
The R2C was the color version of the 2nd Z80-based microcomputer produced by Regency Systems of Champaign, Illinois, the first being the RC1. The RC1 had a high resolution display and dual 8-inch floppy disk drives. It was essentially a standalone PLATO environment, adapting the TUTOR language and environment. The company was founded by David Eades, a real-estate agency owner, and Paul Tenczar, creator of the TUTOR language. The R2C supported an Ethernet network and a hard drive. The introduction of the IBM AT, with 16-bit 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 mos ... processor, hard drive, and EGA display, sparked a change in direction for the company away from hardware. References Early microcomputers Companies based in Champaign County, Illinois {{microc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microcomputer
A microcomputer is a small, relatively inexpensive computer having a central processing unit (CPU) made out of 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 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 i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Regency Systems
A regent (from Latin : ruling, governing) is a person appointed to govern a state ''pro tempore'' (Latin: 'for the time being') because the monarch is a minor, absent, incapacitated or unable to discharge the powers and duties of the monarchy, or the throne is vacant and the new monarch has not yet been determined. One variation is in the Monarchy of Liechtenstein, where a competent monarch may choose to assign regency to their of-age heir, handing over the majority of their responsibilities to prepare the heir for future succession. The rule of a regent or regents is called a regency. A regent or regency council may be formed ''ad hoc'' or in accordance with a constitutional rule. ''Regent'' is sometimes a formal title granted to a monarch's most trusted advisor or personal assistant. If the regent is holding their position due to their position in the line of succession, the compound term ''prince regent'' is often used; if the regent of a minor is their mother, she would be r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Champaign, Illinois
Champaign ( ) is a city in Champaign County, Illinois, United States. The population was 88,302 at the 2020 census. It is the tenth-most populous municipality in Illinois and the fourth most populous city in Illinois outside the Chicago metropolitan area. It is included in the Champaign–Urbana metropolitan area. Champaign shares the main campus of the University of Illinois with its twin city of Urbana. Champaign is also home to Parkland College, which serves about 18,000 students during the academic year. Due to the university and a number of well-known technology startup companies, it is often referred to as the hub, or a significant landmark, of the Silicon Prairie. Champaign houses offices for the Fortune 500 companies Abbott, Archer Daniels Midland (ADM), Caterpillar, John Deere, Dow Chemical Company, IBM, and State Farm. Champaign also serves as the headquarters for several companies, the most notable being Jimmy John's. History Champaign was founded in 1855, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floppy Disk Drive
A floppy disk or floppy diskette (casually referred to as a floppy, or a diskette) is an obsolescent type of disk storage composed of a thin and flexible disk of a magnetic storage medium in a square or nearly square plastic enclosure lined with a fabric that removes dust particles from the spinning disk. Floppy disks store digital data which can be read and written when the disk is inserted into a floppy disk drive (FDD) connected to or inside a computer or other device. The first floppy disks, invented and made by IBM, had a disk diameter of . Subsequently, the 5¼-inch and then the 3½-inch became a ubiquitous form of data storage and transfer into the first years of the 21st century. 3½-inch floppy disks can still be used with an external USB floppy disk drive. USB drives for 5¼-inch, 8-inch, and other-size floppy disks are rare to non-existent. Some individuals and organizations continue to use older equipment to read or transfer data from floppy disks. Floppy disks ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PLATO (computer System)
Plato (428/427 or 424/423 – 348/347 BCE) was a Greek philosopher. Plato may also refer to: People Given name or nickname * Plato (comic poet) () * Plato (exarch) (), Byzantine exarch of Ravenna * Plato II (1737–1812), Metropolitan of Moscow in 1775–1812 * Plato III (born 1993), American rapper * Plato of Bactria (2nd century BCE), Greco-Bactrian king * Plato of Sakkoudion (–814), Byzantine saint * Plato Andros (1921–2008), American football player * Plato Cacheris (1929–2019), American lawyer * Plato T. Durham (1873–1930), American academic administrator * Plato Fludd (), American politician * Plato Malinovsky, Metropolitan of Moscow in 1745–1754 * Plato Malozemoff (1909–1997), Russian-American engineer and businessman * Plato E. Shaw (1883–1947), American historian * Plato A. Skouras (1930–2004), American film producer * Plato Tiburtinus, 12th-century Italian mathematician, astronomer and translator * Plato von Ustinov (1840–1918), Russian-bor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TUTOR (programming Language)
TUTOR, also known as PLATO Author Language, is a programming language developed for use on the PLATO system at the University of Illinois at Urbana-Champaign beginning in roughly 1965. TUTOR was initially designed by Paul Tenczar for use in computer assisted instruction (CAI) and computer managed instruction (CMI) (in computer programs called "lessons") and has many features for that purpose. For example, TUTOR has powerful answer-parsing and answer-judging commands, graphics, and features to simplify handling student records and statistics by instructors. TUTOR's flexibility, in combination with PLATO's computational power (running on what was considered a supercomputer in 1972), also made it suitable for the creation of games — including flight simulators, war games, dungeon style multiplayer role-playing games, card games, word games, and medical lesson games such as ''Bugs and Drugs'' (''BND''). TUTOR lives on today as the programming language for the Cyber1 PLATO Syste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
David Eades (real Estate)
David Eades is a journalist and former BBC News newsreader. He presented ''The World Today'' (05:00–08:00) among other BBC news outlets, and has a long track record in presenting on both domestic and international outlets for the BBC, including ''The World Tonight'' on Radio Four. He has held the posts of Europe Correspondent, Ireland correspondent and senior Sports News Correspondent, as well as the specialist position of Channel Tunnel Correspondent at the time of its construction. He has also presented weekend editions of BBC Breakfast. He was a mentor and trainer for BBC journalists and presenters and also delivered presentational training beyond the broadcasting field. Eades runs his own business, Allday Media Ltd, providing film production services for sports and conference events. Eades is also an MC and moderator, covering international conferences, in particular on areas of European affairs, Sustainability and Sport. Education Eades was educated at the independent s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paul Tenczar
Paul may refer to: * Paul (given name), a given name (includes a list of people with that name) * Paul (surname), a list of people People Christianity *Paul the Apostle (AD c.5–c.64/65), also known as Saul of Tarsus or Saint Paul, early Christian missionary and writer * Pope Paul (other), multiple Popes of the Roman Catholic Church * Saint Paul (other), multiple other people and locations named "Saint Paul" Roman and Byzantine empire * Lucius Aemilius Paullus Macedonicus (c. 229 BC – 160 BC), Roman general * Julius Paulus Prudentissimus (), Roman jurist * Paulus Catena (died 362), Roman notary * Paulus Alexandrinus (4th century), Hellenistic astrologer * Paul of Aegina or Paulus Aegineta (625–690), Greek surgeon Royals *Paul I of Russia (1754–1801), Tsar of Russia * Paul of Greece (1901–1964), King of Greece Other people *Paul the Deacon or Paulus Diaconus (c. 720 – c. 799), Italian Benedictine monk * Paul (father of Maurice), the father of Mau ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethernet
Ethernet () is a family of wired computer networking technologies commonly used in local area networks (LAN), metropolitan area networks (MAN) and wide area networks (WAN). It was commercially introduced in 1980 and first standardized in 1983 as IEEE 802.3. Ethernet has since been refined to support higher bit rates, a greater number of nodes, and longer link distances, but retains much backward compatibility. Over time, Ethernet has largely replaced competing wired LAN technologies such as Token Ring, FDDI and ARCNET. The original 10BASE5 Ethernet uses coaxial cable as a shared medium, while the newer Ethernet variants use twisted pair and fiber optic links in conjunction with switches. Over the course of its history, Ethernet data transfer rates have been increased from the original to the latest , with rates up to under development. The Ethernet standards include several wiring and signaling variants of the OSI physical layer. Systems communicating over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hard Drive
A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magnetic material. The platters are paired with magnetic heads, usually arranged on a moving actuator arm, which read and write data to the platter surfaces. Data is accessed in a random-access manner, meaning that individual blocks of data can be stored and retrieved in any order. HDDs are a type of non-volatile storage, retaining stored data when powered off. Modern HDDs are typically in the form of a small rectangular box. Introduced by IBM in 1956, HDDs were the dominant secondary storage device for general-purpose computers beginning in the early 1960s. HDDs maintained this position into the modern era of servers and personal computers, though personal computing devices produced in large volume, like cell phones and tablets, rely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM AT
The IBM Personal Computer/AT (model 5170, abbreviated as IBM AT or PC/AT) was released in 1984 as the fourth model in the IBM Personal Computer line, following the IBM PC/XT and its IBM Portable PC variant. It was designed around the Intel 80286 microprocessor. Name IBM did not specify an expanded form of "AT" on the machine, press releases, brochures or documentation, but some sources expand the term as "Advanced Technology", including at least one internal IBM document. History IBM's 1984 introduction of the AT was seen as an unusual move for the company, which typically waited for competitors to release new products before producing its own models. At $4,000–6,000, it was only slightly more expensive than considerably slower IBM models. The announcement surprised rival executives, who admitted that matching IBM's prices would be difficult. No major competitor showed a comparable computer at COMDEX Las Vegas that year. Features The AT is IBM PC compatible, with the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
16-bit
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 l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
