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Heathkit
Heathkit is the brand name of kits and other electronic products produced and marketed by the Heath Company. The products over the decades have included electronic test equipment, high fidelity home audio equipment, television receivers, amateur radio equipment, robots, electronic ignition conversion modules for early model cars with point style ignitions, and the influential Heath H-8, H-89, and H-11 hobbyist computers, which were sold in kit form for assembly by the purchaser. Heathkit manufactured electronic kits from 1947 until 1992. After closing that business, the Heath Company continued with its products for education, and motion-sensor lighting controls. The lighting control business was sold around 2000. The company announced in 2011 that they were reentering the kit business after a 20-year hiatus but then filed for bankruptcy in 2012,Swindwa, Julie"Disassembly complete: Heathkit is no more" ''The Herald-Palladium'', 19 July 2012 and under new ownership began restr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heathkit Oscilloscope
Heathkit is the brand name of kits and other electronic products produced and marketed by the Heath Company. The products over the decades have included electronic test equipment, high fidelity home audio equipment, television receivers, amateur radio equipment, robots, electronic ignition conversion modules for early model cars with point style ignitions, and the influential Heath H-8, H-89, and H-11 hobbyist computers, which were sold in kit form for assembly by the purchaser. Heathkit manufactured electronic kits from 1947 until 1992. After closing that business, the Heath Company continued with its products for education, and motion-sensor lighting controls. The lighting control business was sold around 2000. The company announced in 2011 that they were reentering the kit business after a 20-year hiatus but then filed for bankruptcy in 2012,Swindwa, Julie"Disassembly complete: Heathkit is no more" ''The Herald-Palladium'', 19 July 2012 and under new ownership began restr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heathkit H8
Heathkit's H8 is an Intel 8080A-based microcomputer sold in kit form starting in 1977. The H8 is similar to the S-100 bus computers of the era, and like those machines is often used with the CP/M operating system on floppy disk. The main difference between the H8 and S-100 machines is the bus; the H8 uses a 50-pin bus design that was smaller, more robust and better engineered electrically. The machine also includes a bootstrap ROM that makes it easier to start up, including code for running basic input/output and allowing input through a front-mounted octal keypad and front panel display, instead of the binary switches and lights used on machines like the Altair 8800. The H8 requires a separate terminal to be truly useful; Heathkit introduced several terminals as well. A successor model, the "All-in-One" Heathkit H89, combines a Z-80 processor board and a floppy disk drive into the cabinet of an Heathkit H19 terminal. This model also was sold in fully assembled form as the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zenith Z-89
The Z-89 is a personal computer produced by Zenith Data Systems (ZDS) in the early 1980s. Description The Zenith Z-89 is based on the Zilog Z80 microprocessor running at 2.048 MHz, and supports the HDOS and CP/M operating systems. The US$2295 Z-89 is integrated in a terminal-like enclosure with a non-detachable keyboard, 12-inch monochrome CRT with a 80x25 screen, 48 KB RAM, and a 5.25" floppy disk drive. The keyboard is of high build quality and has an unusual number of special purpose keys: REPEAT, ESC, TAB, CAPS, CTRL, SCROLL, RESET, BREAK, BACK SPACE, LINE FEED, DELETE, REPEAT, and two with red and blue squares. There are five function keys and a numeric keypad. The video display has reverse video and block graphics are available. The computer has two small card cages inside the cabinet on either side of the CRT, each of which accept up to three proprietary circuit cards. Upgrade cards available for this included disk controller cards (see below), a 16 KB RAM ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heathkit H11
The Heathkit H11 Computer is an early electronic kit, kit-format personal computer introduced in 1978. It is essentially a Digital Equipment Corporation, Digital Equipment PDP-11 in a small-form-factor case, designed by Heathkit. The H11 is one of the first 16-bit personal computers, at a list price of US$1,295, () but it also requires at least a computer terminal and some form of storage to make it useful. It was too expensive for most Heathkit customers, and was discontinued in 1982. Specifications The H11 featured:1977 advertising material from Heathkit of Benton Harbor, Michigan. * Processor — PDP-11#LSI-11, LSI-11 (KD11-HA half-size or "double-height" card) * Speed — 2.5 MHz * ROM — 8Kwords (16 Kbytes) (max) * RAM — 32Kwords (64 Kbytes) (max) * Slots — 7 Q-bus slots * Storage — H27 8-inch floppy drive (2 256k 8-inch single sided drives) or paper tape * I/O — serial (RS-232) or parallel por ... [...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] |
Edward Bayard Heath
Edward Bayard Heath (November 17, 1888 – November 1, 1931) was an American Aircraft engineer. Biography He was born on November 17, 1888 in Brooklyn, New York to Clark Heath and Ada M. Johnson.Illinois Death Index Heath designed and built a series of aircraft starting in 1909 with a Bleriot-inspired monoplane. His first flight was on 10 October 1909 in Amsterdam, New York resulting in a broken landing gear. On July 4, 1910 Heath made $500 in appearance fees and $200 in photograph revenues from his aircraft that flew a 3 feet above the ground. In 1911 Heath went to work for Glen Curtiss in Hammondsport, New York as a motorcycle mechanic, next to the Curtiss aircraft factory where he built a second aircraft with Walter Eales making short aerial runs. After purchasing the Chicago-based Bates Aeroplane Company in 1912, Heath founded the ''E.B. Heath Aerial Vehicle Co.'', later becoming the ''Heath Airplane Company''. His company produced the ''Heath Feather'' and ''Heath F ... [...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] |
Oscilloscope
An oscilloscope (informally a scope) is a type of electronic test instrument that graphically displays varying electrical voltages as a two-dimensional plot of one or more signals as a function of time. The main purposes are to display repetitive or single waveforms on the screen that would otherwise occur too briefly to be perceived by the human eye. The displayed waveform can then be analyzed for properties such as amplitude, frequency, rise time, time interval, distortion, and others. Originally, calculation of these values required manually measuring the waveform against the scales built into the screen of the instrument. Modern digital instruments may calculate and display these properties directly. Oscilloscopes are used in the sciences, medicine, engineering, automotive and the telecommunications industry. General-purpose instruments are used for maintenance of electronic equipment and laboratory work. Special-purpose oscilloscopes may be used to analyze an automotive ign ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heath Parasol
The Heath Parasol is an American single or two seat, open-cockpit, parasol winged, homebuilt monoplane. Design and development In 1926, Edward Bayard Heath, a successful American air racer and the owner of an aircraft parts supply business, built the first example of the Heath Parasol, a small, single seat parasol winged airplane using surplus wings from a Thomas-Morse S-4, a World War One fighter trainer, mounted above a steel-tube structure fuselage and powered by a Henderson four-cylinder motorcycle engine. This was the prototype for a series of single and two-seat recreational craft that utilized the Clark Y airfoil. In 1929 ''Modern Mechanix'' magazine published the plans in a series and the plans were reprinted in their "1930 Flying & Gliding Manual," which in turn has been reprinted periodically by the EAA (Experimental Aircraft Association). Although Heath died in 1931 his Parasol designs remained extremely popular, being economical to build and operate as well as easy t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cathode Ray Tube
A cathode-ray tube (CRT) is a vacuum tube containing one or more electron guns, which emit electron beams that are manipulated to display images on a phosphorescent screen. The images may represent electrical waveforms ( oscilloscope), pictures (television set, computer monitor), radar targets, or other phenomena. A CRT on a television set is commonly called a picture tube. CRTs have also been used as memory devices, in which case the screen is not intended to be visible to an observer. The term ''cathode ray'' was used to describe electron beams when they were first discovered, before it was understood that what was emitted from the cathode was a beam of electrons. In CRT television sets and computer monitors, the entire front area of the tube is scanned repeatedly and systematically in a fixed pattern called a raster. In color devices, an image is produced by controlling the intensity of each of three electron beams, one for each additive primary color (red, green, and bl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Howard Anthony
Howard is an English-language given name originating from Old French Huard (or Houard) from a Germanic source similar to Old High German ''*Hugihard'' "heart-brave", or ''*Hoh-ward'', literally "high defender; chief guardian". It is also probably in some cases a confusion with the Old Norse cognate ''Haward'' (''Hávarðr''), which means "high guard" and as a surname also with the unrelated Hayward. In some rare cases it is from the Old English ''eowu hierde'' "ewe herd". In Anglo-Norman the French digram ''-ou-'' was often rendered as ''-ow-'' such as ''tour'' → ''tower'', ''flour'' (western variant form of ''fleur'') → ''flower'', etc. (with svarabakhti). A diminutive is "Howie" and its shortened form is "Ward" (most common in the 19th century). Between 1900 and 1960, Howard ranked in the U.S. Top 200; between 1960 and 1990, it ranked in the U.S. Top 400; between 1990 and 2004, it ranked in the U.S. Top 600. People with the given name Howard or its variants include: Given ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Niles, Michigan
Niles is a city in Berrien and Cass counties in the U.S. state of Michigan, near the Indiana border city of South Bend. In 2010, the population was 11,600 according to the 2010 census. It is the larger, by population, of the two principal cities in the Niles- Benton Harbor Metropolitan Statistical Area, an area with 156,813 people. Niles lies on the banks of the St. Joseph River, at the site of the French Fort St. Joseph, which was built in 1697 to protect the Jesuit Mission established in 1691. After 1761, it was held by the British colonization of the Americas, British and was captured on May 25, 1763, by Native Americans in the United States, Native Americans during Pontiac's Rebellion. The British retook the fort but it was not re-garrisoned and served as a trading post. During the American Revolutionary War, the fort was held for a short time by a Spanish colonization of the Americas, Spanish force. The occupation of the fort by the four nations of France, Britain, Spain, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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