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KoalaPad
The KoalaPad is a graphics tablet, released in 1983 by U.S. company Koala Technologies Corporation, for the Apple II, TRS-80 Color Computer (as the TRS-80 Touch Pad), Atari 8-bit family, and Commodore 64, as well as for the IBM PC. Originally designed by Dr. David Thornburg as a low-cost computer drawing tool for schools, the Koala Pad and the bundled drawing program, KoalaPainter, was popular with home users as well. KoalaPainter was called KoalaPaint in some versions for the Apple II, and PC Design for the IBM PC. A program called Graphics Exhibitor was included for creating slideshow presentations from KoalaPainter drawings. Description The pad was four inches square (i.e. roughly 10×10 cm) and mounted on a slightly inclined base with the back of the pad higher than the front. At the top, "behind" the pad, were two buttons. The pad hooked into the computer using the analog signals of the joystick ports (the so-called paddle inputs), which meant that it had a low resolu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Koalapad Loz CIMG1891
The KoalaPad is a graphics tablet, released in 1983 by U.S. company Koala Technologies Corporation, for the Apple II, TRS-80 Color Computer (as the TRS-80 Touch Pad), Atari 8-bit family, and Commodore 64, as well as for the IBM PC. Originally designed by Dr. David Thornburg as a low-cost computer drawing tool for schools, the Koala Pad and the bundled drawing program, KoalaPainter, was popular with home users as well. KoalaPainter was called KoalaPaint in some versions for the Apple II, and PC Design for the IBM PC. A program called Graphics Exhibitor was included for creating slideshow presentations from KoalaPainter drawings. Description The pad was four inches square (i.e. roughly 10×10 cm) and mounted on a slightly inclined base with the back of the pad higher than the front. At the top, "behind" the pad, were two buttons. The pad hooked into the computer using the analog signals of the joystick ports (the so-called paddle inputs), which meant that it had a low r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Graphics Tablet
A graphics tablet (also known as a digitizer, digital graphic tablet, pen tablet, drawing tablet, external drawing pad or digital art board) is a computer input device that enables a user to hand-draw images, animations and graphics, with a special pen-like stylus (computing), stylus, similar to the way a person draws images with a pencil and paper. These tablets may also be used to capture data or handwritten signatures. It can also be used to trace an image from a piece of paper that is taped or otherwise secured to the tablet surface. Capturing data in this way, by tracing or entering the corners of linear Polygonal chain, polylines or shapes, is called digitizing. The device consists of a rough surface upon which the user may "draw" or trace an image using the attached stylus (computing), stylus, a pen-like drawing apparatus. The image is shown on the computer computer display, monitor, though some graphic tablets now also incorporate an LCD screen for more realistic or natu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MousePaint
Bill Budge (born August 11, 1954) is a retired American video game programmer and designer. He is best known for the Apple II games '' Raster Blaster'' (1981) and ''Pinball Construction Set'' (1983). Early games Budge says he became interested in computers while obtaining a PhD at UC Berkeley. He purchased an Apple II and began writing games. He enjoyed it so much that he dropped out of school and became a game programmer. Budge's first game was a ''Pong'' clone, called ''Penny Arcade'', which he wrote using his own custom graphics routines. He traded the completed game to Apple Computer for a Centronics printer.An interview with Budge from ''Halcyon Days'' California Pacific published a collec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Commodore 64
The Commodore 64, also known as the C64, is an 8-bit home computer introduced in January 1982 by Commodore International (first shown at the Consumer Electronics Show, January 7–10, 1982, in Las Vegas). It has been listed in the Guinness World Records as the highest-selling single computer model of all time, with independent estimates placing the number sold between 12.5 and 17 million units. Volume production started in early 1982, marketing in August for . Preceded by the VIC-20 and Commodore PET, the C64 took its name from its of RAM. With support for multicolor sprites and a custom chip for waveform generation, the C64 could create superior visuals and audio compared to systems without such custom hardware. The C64 dominated the low-end computer market (except in the UK and Japan, lasting only about six months in Japan) for most of the later years of the 1980s. For a substantial period (1983–1986), the C64 had between 30% and 40% share of the US market and two mil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dither
Dither is an intentionally applied form of image noise, noise used to randomize quantization error, preventing large-scale patterns such as color banding in images. Dither is routinely used in processing of both digital audio and digital video, video data, and is often one of the last stages of Audio mastering, mastering audio to a compact disc, CD. A common use of dither is converting a grayscale image to Binary image, black and white, such that the density of black dots in the new image approximates the average gray level in the original. Etymology The term ''dither'' was published in books on analog computation and hydraulically controlled guns shortly after World War II. Though he did not use the term ''dither'', the concept of dithering to reduce quantization patterns was first applied by Lawrence G. Roberts in his 1961 MIT master's thesis and 1962 article. By 1964 dither was being used in the modern sense described in this article. The technique was in use at least ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Logo Programming Language
Logo is an educational programming language, designed in 1967 by Wally Feurzeig, Seymour Papert, and Cynthia Solomon. ''Logo'' is not an acronym: the name was coined by Feurzeig while he was at Bolt, Beranek and Newman, and derives from the Greek ''logos'', meaning ''word'' or ''thought''. A general-purpose language, Logo is widely known for its use of turtle graphics, in which commands for movement and drawing produced line or vector graphics, either on screen or with a small robot termed a turtle. The language was conceived to teach concepts of programming related to Lisp and only later to enable what Papert called " body-syntonic reasoning", where students could understand, predict, and reason about the turtle's motion by imagining what they would do if they were the turtle. There are substantial differences among the many dialects of Logo, and the situation is confused by the regular appearance of turtle graphics programs that are named Logo. Logo is a multi-paradigm adaptati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Educational Software
Educational software is a term used for any computer software which is made for an educational purpose. It encompasses different ranges from language learning software to classroom management software to reference software. The purpose of all this software is to make some part of education more effective and efficient. History 1946s–1970s The use of computer hardware and software in education and training dates to the early 1940s, when American researchers developed flight simulators which used analog computers to generate simulated onboard instrument data. One such system was the type19 synthetic radar trainer, built in 1943. From these early attempts in the WWII era through the mid-1970s, educational software was directly tied to the hardware, on which it ran. Pioneering educational computer systems in this era included the PLATO system (1960), developed at the University of Illinois, and TICCIT (1969). In 1963, IBM had established a partnership with Stanford University's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apple Mouse
Apple Inc. has designed and manufactured several models of mice, trackpads and other pointing devices, primarily for use with Macintosh computers. Over the years, Apple has maintained a distinct form and function with its mice that reflect their design languages of that time. Apple's current external pointing devices are the Magic Mouse 2 and Magic Trackpad 2. Mice Mice manufactured by Apple previously only had a single button control interface, until the Mighty Mouse in 2005, which introduced a clickable scroll ball and multiple programmable buttons. Mice made by Apple contained a ball-tracking control mechanism, until the Pro Mouse in 2000 when Apple moved to an optical-based tracking mechanism. Apple's current mouse, the Magic Mouse 2, uses laser tracking. Background In 1979, Apple was planning to develop a business computer, and arranged a visit with the Xerox Parc research center to view some of their experimental technology. It was there they discovered the mouse, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BYTE
The byte is a unit of digital information that most commonly consists of eight bits. Historically, the byte was the number of bits used to encode a single character of text in a computer and for this reason it is the smallest addressable unit of memory in many computer architectures. To disambiguate arbitrarily sized bytes from the common 8-bit definition, network protocol documents such as The Internet Protocol () refer to an 8-bit byte as an octet. Those bits in an octet are usually counted with numbering from 0 to 7 or 7 to 0 depending on the bit endianness. The first bit is number 0, making the eighth bit number 7. The size of the byte has historically been hardware-dependent and no definitive standards existed that mandated the size. Sizes from 1 to 48 bits have been used. The six-bit character code was an often-used implementation in early encoding systems, and computers using six-bit and nine-bit bytes were common in the 1960s. These systems often had memory words ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ahoy!
''Ahoy!'' was a computer magazine published between January 1984 and January 1989 in the US, focusing on all Commodore color computers, but especially the Commodore 64 and Amiga. History The first issue of ''Ahoy!'' was published in January 1984. The magazine was published monthly by Ion International and was headquartered in New York City. It published many games in BASIC and machine language, occasionally also printing assembly language source code. ''Ahoy!'' published a checksum A checksum is a small-sized block of data derived from another block of digital data for the purpose of detecting errors that may have been introduced during its transmission or storage. By themselves, checksums are often used to verify data ... program called ''Flankspeed'' for entering machine language listings. ''Ahoy!'s AmigaUser'' was a related but separate publication dedicated to the Amiga. It was spun off from a series of columns in ''Ahoy!'' with the same title, and the first two issu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dazzle Draw
Dazzle Draw is a raster graphics editor for the Apple IIc and Apple IIe. The program allows users to create bitmap images which can then be printed or used in other programs. Developed by David Snider and released in 1984 by Broderbund, the program is similar to MacPaint MacPaint is a raster graphics editor developed by Apple Computer and released with the original Macintosh personal computer on January 24, 1984. It was sold separately for US$195 with its word processing counterpart, MacWrite. MacPaint was nota ..., released in early 1984. Snider previously wrote the Apple II pinball game '' David's Midnight Magic''. Dazzle Draw is designed specifically to take advantage of the graphics capabilities of the Apple IIc and Enhanced IIe. The program allows use of 16 colors and supports the creation of automated slide shows. References External links * * {{Raster graphics editors 1984 software Raster graphics editors Apple II software Discontinued software ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Broderbund
Broderbund Software, Inc. (stylized as Brøderbund) was an American maker of video games, educational software, and productivity tools. Broderbund is best known for the 8-bit video game hits ''Choplifter'', ''Lode Runner'', ''Karateka'', and ''Prince of Persia'' (all of which originated on the Apple II), as well as ''The Print Shop''—originally for printing signs and banners on dot matrix printers—and the ''Myst'' and ''Carmen Sandiego'' games. The company was founded in Eugene, Oregon, and moved to San Rafael, California, then later to Novato, California. Brøderbund was purchased by SoftKey in 1998. Many of Broderbund's software titles, such as ''The Print Shop'', ''PrintMaster'', and ''Mavis Beacon'', are still published under the name "Brøderbund". Games released by the revived Broderbund are distributed by Encore, Inc. ''Brøderbund'' is now the brand name for Riverdeep's graphic design, productivity, and edutainment titles such as The Print Shop, ''Carmen Sandiego'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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