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HP 7470
The HP 7470 was a small low-cost desktop pen plotter introduced by Hewlett-Packard's San Diego division in 1982. It was the first small-format plot that moved the paper, rather than the pens. It used a revolutionary "grit wheel" design which moved the paper held in place by a wheel with embedded grit and a pinch roller. The HP 7470 had two pens, one on either side and plotted on ANSI A (8.5 x 11 inch) or A4-sized paper. It was much less expensive than the previous flatbed design. It was very heavy but had 4 pens. The HP 7475 used a rotating carousel with six pens. That plotter was used in greeting card kiosks. This design was also scaled up for very large pen plotters. These were driven by the HP-GL plotter language which used ASCII commands such as PA 300, 4500;PD;. The plotter had three electrical interfaces: HP-IB, RS-232, and HP-IL for HP handheld calculators. Pen plotters became obsolete with the adoption of ink-jet printers, and processors fast enough to rasterize In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Plotter
A plotter is a machine that produces vector graphics drawings. Plotters draw lines on paper using a pen, or in some applications, use a knife to cut a material like Polyvinyl chloride, vinyl or leather. In the latter case, they are sometimes known as a cutting plotter. In the past, plotters were used in applications such as computer-aided design, as they were able to produce line drawings much faster and of a higher quality than contemporary conventional printers. Smaller desktop plotters were often used for business graphics. Printers with graphics capabilities took away some of the market by the early 1980s, and the introduction of laser printers in the mid-1980s largely eliminated the use of plotters from most roles. Plotters retained a niche for producing very large drawings for many years, but have now largely been replaced by wide-format printer, wide-format conventional printers. Cutting plotters remain in use in a number of industries. Overview Digitally controlled pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hewlett-Packard
The Hewlett-Packard Company, commonly shortened to Hewlett-Packard ( ) or HP, was an American multinational information technology company. It was founded by Bill Hewlett and David Packard in 1939 in a one-car garage in Palo Alto, California, where the company would remain headquartered for the remainder of its lifetime; this HP Garage is now a designated landmark and marked with a plaque calling it the "Birthplace of 'Silicon Valley. HP developed and provided a wide variety of hardware components, as well as software and related services, to consumers, small and medium-sized businesses (small and medium-sized enterprises, SMBs), and fairly large companies, including customers in government sectors, until the company officially split into Hewlett Packard Enterprise and HP Inc. in 2015. HP initially produced a line of electronic test and measurement equipment. It won its first big contract in 1938 to provide the HP 200B, a variation of its first product, the HP 200A low-distor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
San Diego
San Diego ( , ) is a city on the Pacific coast of Southern California, adjacent to the Mexico–United States border. With a population of over 1.4 million, it is the List of United States cities by population, eighth-most populous city in the United States. San Diego is the county seat, seat of San Diego County. It is known for its mild Mediterranean climate, extensive List of beaches in San Diego County, beaches and List of parks in San Diego, parks, long association with the United States Navy, and recent emergence as a wireless, electronics, List of hospitals in San Diego, healthcare, and biotechnology development center. Historically home to the Kumeyaay people, San Diego has been referred to as the ''Birthplace of California'', as it was the first site visited and settled by Europeans on what is now the West Coast of the United States. In 1542, Juan Rodríguez Cabrillo claimed the area for Spain, forming the basis for the settlement of Alta California, 200 years later. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HP-GL
HP-GL, short for Hewlett-Packard Graphics Language and often written as HPGL, is a printer control language created by Hewlett-Packard (HP). HP-GL was the primary printer control language used by HP plotters. It was introduced with the plotteHP-9872in 1977 and became a standard for almost all plotters. Hewlett-Packard's computer printer, printers also usually support HP-GL/2 in addition to Printer Command Language, PCL. Design The language is formed from a series of two letter codes (mnemonics), followed by optional parameters. For instance an Arc (geometry), arc can be drawn on a page by sending the string: AA100,100,50; This means ''Arc Absolute'', and the parameters place the center of the arc at absolute Cartesian coordinate system, coordinates 100,100 on the page, with a starting angle of 50 Degree (angle), degrees measured counter-clockwise. A fourth optional parameter (not used here) specifies how far the arc continues, and defaults to 5 degrees. When first introduced, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ASCII
ASCII ( ), an acronym for American Standard Code for Information Interchange, is a character encoding standard for representing a particular set of 95 (English language focused) printable character, printable and 33 control character, control characters a total of 128 code points. The set of available punctuation had significant impact on the syntax of computer languages and text markup. ASCII hugely influenced the design of character sets used by modern computers; for example, the first 128 code points of Unicode are the same as ASCII. ASCII encodes each code-point as a value from 0 to 127 storable as a seven-bit integer. Ninety-five code-points are printable, including digits ''0'' to ''9'', lowercase letters ''a'' to ''z'', uppercase letters ''A'' to ''Z'', and commonly used punctuation symbols. For example, the letter is represented as 105 (decimal). Also, ASCII specifies 33 non-printing control codes which originated with ; most of which are now obsolete. The control cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HP-IB
Glycoprotein Ib (GPIb), also known as CD42, is a component of the GPIb-V-IX complex on platelets. The GPIb-V-IX complex binds von Willebrand factor, allowing platelet adhesion and platelet plug formation at sites of vascular injury. Glycoprotein Ibα (GPIbα) is the major ligand-binding subunit of the GPIb-V-IX complex. GPIbα is heavily glycosylated. It is deficient in the Bernard–Soulier syndrome. A gain-of-function mutation causes platelet-type von Willebrand disease Von Willebrand disease (VWD) is the most common heredity, hereditary coagulopathy, blood-clotting disorder in humans. An acquired form can sometimes result from other medical conditions. It arises from a deficiency in the quality or quantity of .... Autoantibodies against Ib/IX can be produced in immune thrombocytopenic purpura. Components include GP1BA and GP1BB. It complexes with Glycoprotein IX. References External links * Glycoproteins {{protein-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RS-232
In telecommunications, RS-232 or Recommended Standard 232 is a standard introduced in 1960 for serial communication transmission of data. It formally defines signals connecting between a ''DTE'' (''data terminal equipment'') such as a computer terminal or PC, and a ''DCE'' ('' data circuit-terminating equipment'' or '' data communication equipment''), such as a modem. The standard defines the electrical characteristics and timing of signals, the meaning of signals, and the physical size and pinout of connectors. The current version of the standard is ''TIA-232-F Interface Between Data Terminal Equipment and Data Circuit-Terminating Equipment Employing Serial Binary Data Interchange'', issued in 1997. The RS-232 standard had been commonly used with serial ports and serial cables. It is still widely used in industrial communication devices. A serial port complying with the RS-232 standard was once a standard feature of many types of computers. Personal computers used them ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
HP-IL
The HP-IL (''Hewlett-Packard Interface Loop'') was a short-range interconnection bus or network introduced by Hewlett-Packard in the early 1980s. It enabled many devices such as printers, plotters, displays, storage devices (floppy disk drives and tape drives), test equipment, etc. to be connected to programmable calculators such as the HP-41C, HP-71B and HP-75C/D, the Series 80 and HP-110 computers, as well as generic ISA bus based PCs. Principles As its name implies, an HP-IL network formed a loop (i.e. it was a Ring network): each device in the loop had a pair of two-wire connections, one designated ''in'', which received messages from the previous device in the loop; and one designated ''out'', which delivered messages to the next device in the loop. One device on the loop is designated the ''controller'', and manages all other devices on the loop. HP-IL cables utilize a unique two-pin connector design with polarizing D-shaped shells, and can be connected together withou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ink-jet Printer
Inkjet printing is a type of computer printing that recreates a digital image by propelling droplets of ink onto paper or plastic substrates. Inkjet printers were the most commonly used type of printer in 2008, and range from small inexpensive consumer models to expensive professional machines. By 2019, laser printers outsold inkjet printers by nearly a 2:1 ratio, 9.6% vs 5.1% of all computer peripherals. The concept of inkjet printing originated in the 20th century, and the technology was first extensively developed in the early 1950s. While working at Canon in Japan, Ichiro Endo suggested the idea for a "bubble jet" printer, while around the same time Jon Vaught at Hewlett-Packard (HP) was developing a similar idea. In the late 1970s, inkjet printers that could reproduce digital images generated by computers were developed, mainly by Epson, HP and Canon. In the worldwide consumer market, four manufacturers account for the majority of inkjet printer sales: Canon, HP, Epson ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rasterisation
In computer graphics, rasterisation (British English) or rasterization (American English) is the task of taking an image described in a vector graphics format (shapes) and converting it into a raster image (a series of pixels, dots or lines, which, when displayed together, create the image which was represented via shapes). The rasterized image may then be displayed on a computer display, video display or printer, or stored in a bitmap file format. Rasterization may refer to the technique of drawing 3D models, or to the conversion of 2D rendering primitives, such as polygons and line segments, into a rasterized format. Etymology The term "rasterisation" comes . 2D images Line primitives Bresenham's line algorithm is an example of an algorithm used to rasterize lines. Circle primitives Algorithms such as the midpoint circle algorithm are used to render circles onto a pixelated canvas. 3D images Rasterization is one of the typical techniques of rendering 3D models ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Houston Instrument
Calcomp Technology, Inc., often referred to as Calcomp or CalComp, was a company best known for its Calcomp plotters. History It was founded as California Computer Products, Inc in 1959, located in Anaheim, California. Sanders Associates, Sanders Associates, Inc., purchased Calcomp in 1980. In 1986, Sanders Associates was purchased by the Lockheed Corporation, and merged into Lockheed's Information Systems Group. Lockheed kept CalComp as a brand name. Shutdown Calcomp Technology shut down its operations in 1999, and transferred different product lines to various other companies, some of whom continue to use the "Calcomp" or other "Cal-" trademarks: * Technical Services and spare parts: CalGraph Technology Services, Inc. * TechJet 5500 Large Format Inkjet Plotter / Printer Information: CalComp Graphics. * Digitizer, Tablets and scanners: GTCO CalComp, Inc. * Film Imaging Systems: EcoPro Imaging (now part of OYO Instruments) * Cutter and sign maker products: Westcomp Products It ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pen Plotters
PEN may refer to: * (National Ecological Party), former name of the Brazilian political party Patriota (PATRI) *PEN International, a worldwide association of writers **English PEN, the founding centre of PEN International **PEN America, located in New York City **PEN Center USA, part of PEN America ** PEN Canada, Toronto ** PEN Hong Kong **Sydney PEN, one of three Australian PENs *PEN-International, Postsecondary Education Network International, an international partnership of colleges for those with hearing impairment *Penang International Airport, Malaysia, IATA airport code: PEN *Penarth railway station, Wales, station code: PEN *Peruvian sol, ISO 4217 currency code PEN *, the system of national executive power embodied in the President of Argentina *Polyethylene naphthalate, a polyester *Private Enterprise Number, an organisation identifier *Protective earth neutral in electrical earthing system An earthing system (UK and IEC) or grounding system (US) connects specific parts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
