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Commodore 1541
The Commodore 1541 (also known as the CBM 1541 and VIC-1541) is a floppy disk drive which was made by Commodore International for the Commodore 64 (C64), Commodore's most popular home computer. The best-known floppy disk drive for the C64, the 1541 is a single-sided 170-kilobyte drive for 5¼" disks. The 1541 directly followed the Commodore 1540 (meant for the VIC-20). The disk drive uses group coded recording (GCR) and contains a MOS Technology 6502 microprocessor, doubling as a disk controller and on-board disk operating system (DOS) processor. The number of sectors per track varies from 17 to 21 (an early implementation of zone bit recording). The drive's built-in disk operating system is CBM DOS 2.6. History Introduction The 1541 was priced at under at its introduction. A C64 plus a 1541 cost about $900, while an Apple II with no disk drive cost $1,295. The first 1541 drives produced in 1982 have a label on the front reading VIC-1541 and have an off-white case to m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floppy Disk
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 disk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kilobyte
The kilobyte is a multiple of the unit byte for digital information. The International System of Units (SI) defines the prefix ''kilo'' as 1000 (103); per this definition, one kilobyte is 1000 bytes.International Standard IEC 80000-13 Quantities and Units – Part 13: Information science and technology, International Electrotechnical Commission (2008). The internationally recommended unit symbol for the kilobyte is kB. In some areas of information technology, particularly in reference to solid-state memory capacity, ''kilobyte'' instead typically refers to 1024 (210) bytes. This arises from the prevalence of sizes that are powers of two in modern digital memory architectures, coupled with the accident that 210 differs from 103 by less than 2.5%. A kibibyte is defined by Clause 4 of IEC 80000-13 as 1024 bytes. Definitions and usage Base 10 (1000 bytes) In the International System of Units (SI) the prefix ''kilo'' means 1000 (103); therefore, one kilobyte is 1000 bytes. The u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Printed Circuit Board
A printed circuit board (PCB; also printed wiring board or PWB) is a medium used in Electrical engineering, electrical and electronic engineering to connect electronic components to one another in a controlled manner. It takes the form of a Lamination, laminated sandwich structure of conductive and insulating layers: each of the conductive layers is designed with an artwork pattern of traces, planes and other features (similar to wires on a flat surface) Chemical milling, etched from one or more sheet layers of copper Lamination, laminated onto and/or between sheet layers of a Insulator (electricity), non-conductive substrate. Electrical components may be fixed to conductive pads on the outer layers in the shape designed to accept the component's terminals, generally by means of soldering, to both electrically connect and mechanically fasten them to it. Another manufacturing process adds Via (electronics), vias: plated-through holes that allow interconnections between layers. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitsumi
was a Japanese manufacturer of consumer electronic components, founded in 1954. The company was listed on the Tokyo Stock Exchange, was constituent of the Nikkei 225 stock index and provided its products through its subsidiaries in Asia, Europe, and North America. Mitsumi was primarily known as an OEM manufacturer of computer peripherals and input devices, Floppy and optical disc drives used in laptop computers, desktops, servers and the Famicom Disk System. On January 27, 2017, Minebea merged with Mitsumi to form MinebeaMitsumi. Products Video game console controllers One of the company's most noticeable product lines were video game console controllers. Mitsumi manufactured the official controllers for the following consoles: *Nintendo Entertainment System/Famicom controller *Super Nintendo Entertainment System/Super Famicom controller *GameCube controller (Certain revisions only) and the WaveBird Wireless Controller *Panasonic 3DO Controller *Wii Remote and Wii Nunchuk (C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toaster
A toaster is a small electric appliance that uses radiant heat to brown sliced bread into toast. Types Pop-up toaster In pop-up or automatic toasters, a single vertical piece of bread is dropped into a slot on the top of the toaster. A lever on the side of the toaster is pressed down, lowering the bread into the toaster and activating the heating elements. The length of the toasting cycle (and therefore the degree of toasting) is adjustable via a lever, knob, or series of pushbuttons, and when an internal device determines that the toasting cycle is complete, the toaster turns off and the toast pops up out of the slots. The completion of toasting may be determined by a timer or by a thermal sensor, such as a bimetallic strip, located close to the toast. Toasters may also be used to toast other foods such as teacakes, toaster pastry, potato waffles and crumpets, though the resultant accumulation of fat and sugar inside the toaster can contribute to its eventual failur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Toast (food)
Toast is sliced bread that has been browned by radiant heat. The browning is the result of a Maillard reaction altering the flavor of the bread and making it firmer. The firm surface is easier to spread toppings on and the warmth can help butter reach its melting point. Toasting is a common method of making stale bread more palatable. Bread is toasted using a toaster or a toaster oven. Toast may contain carcinogens (acrylamide) caused by the browning process. Butter or margarine, and sweet toppings, such as jam or jelly, are commonly spread on toast. Regionally, savory spreads, such as peanut butter or yeast extract, may also be popular. Toast may accompany savory dishes such as soups or stews, or it can be topped with ingredients like eggs or baked beans to make a light meal. Toast is a common breakfast food. A sandwich may also use toasted bread. Etymology and history The word ''toast'' comes from the Latin ''torrere'' 'to burn'. One of the first references to toast in print ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alps Electric
is a Japanese multinational corporation, headquartered in Tokyo, Japan, producing electronic devices, including switches, potentiometers, sensors, encoders and touchpads. The company was established in 1948 as Kataoka Electric Co., Ltd. and changed its name to Alps Electric Co., Ltd. in December 1964. Since June 22, 2012, the President has been Toshihiro Kuriyama and Chairman is Masataka Kataoka. Alps is also well known for the Alpine brand of car audio. The Alps Electric Group has R&D, production and sales bases located in Japan and around the globe—in the Americas, Europe, Southeast Asia, Korea, and Greater China. Since its founding, Alps Electric has supplied around 40,000 types of electronic components to over 2,000 manufacturers of home appliances, mobile devices, automobiles and industrial equipment worldwide. Alps Group comprises 84 subsidiary companies, 25 through Alps Electric, 32 through Alpine Electronics and 27 through Alps Logistics. The company is listed on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compute!'s Gazette
''Compute!'s Gazette'' (), stylized as ''COMPUTE!'s Gazette'', was a computer magazine of the 1980s, directed at users of Commodore's 8-bit home computers. Announced as ''The Commodore Gazette'', it was a Commodore-only daughter magazine of the computer hobbyist magazine ''Compute!''. It was first published in July 1983. It contained both standard articles and type-in programs. Many of these programs were quite long and sophisticated. To assist in entry, ''Gazette'' published several utilities. The Automatic Proofreader provided checksum capabilities for BASIC programs, while machine language listings could be entered with MLX. Starting in May 1984, a companion disk with each issue's programs was available to subscribers for an extra fee. Perhaps its most popular and enduring type-in application was the ''SpeedScript'' word processor. A monthly column, "The VIC Magician" by Michael Tomczyk, presented BASIC programming tips and tricks for the VIC-20 and Commodore 64. The publ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Creative Computing
''Creative Computing'' was one of the earliest magazines covering the microcomputer revolution. Published from October 1974 until December 1985, the magazine covered the spectrum of hobbyist/home/personal computing in a more accessible format than the rather technically oriented ''Byte (magazine), Byte''. The magazine was created to cover educational-related topics. Early issues include articles on the use of computers in the classroom, various simple programs like madlibs and various programming challenges, mostly in BASIC programming language, BASIC. By the late 1970s, it had moved towards more general coverage as the microcomputer market emerged. Hardware coverage became more common, but type-in programs remained common into the early 1980s. The company published several books, the most successful being ''BASIC Computer Games'', the first million-selling computer book. Their ''Best of Creative Computing'' collections were also popular. ''Creative Computing'' also published so ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Video Game Crash Of 1983
The video game crash of 1983 (known as the Atari shock in Japan) was a large-scale recession in the video game industry that occurred from 1983 to 1985, primarily in the United States. The crash was attributed to several factors, including market saturation in the number of video game consoles and available games, many of which were of poor quality, as well as waning interest in console games in favor of personal computers. Home video game revenues peaked at around $3.2 billion in 1983, then fell to around $100 million by 1985 (a drop of almost 97 percent). The crash abruptly ended what is retrospectively considered the second generation of console video gaming in North America. To a lesser extent, the arcade game market also weakened as the golden age of arcade video games came to an end. Lasting about two years, the crash shook a then-booming video game industry and led to the bankruptcy of several companies producing home computers and video game consoles. Analysts of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apple II Series
The Apple II series (trademarked with square brackets as "Apple ] ''" and rendered on later models as "Apple //") is a family of home computers, one of the first highly successful mass-produced microcomputer products, designed primarily by Steve Wozniak, manufactured by Apple Computer (now Apple Inc.), and launched in 1977 with the Apple II, original Apple II. In terms of ease of use, features, and expandability, the Apple II was a major advancement over its predecessor, the Apple I, a limited-production bare circuit board computer for electronics hobbyists. Through 1988, a number of models were introduced, with the most popular, the Apple IIe, remaining relatively unchanged into the 1990s. A model with more advanced graphics and sound and a 16-bit processor, the Apple IIGS, was added in 1986. It remained compatible with earlier Apple II models, but the IIGS had more in common with mid-1980s systems like the Atari ST, Amiga, and Acorn Archimedes. The Apple II was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zone Bit Recording
In computer storage, zone bit recording (ZBR) is a method used by disk drives to optimise the tracks for increased data capacity. It does this by placing more sectors per zone on outer tracks than on inner tracks. This contrasts with other approaches, such as ''constant angular velocity'' (CAV) -drives, where the number of sectors per track are the same. On a disk consisting of roughly concentric tracks – whether realized as separate circular tracks or as a single spiral track – the physical track length (circumference) is increased as it gets farther from the centre hub. The inner tracks are packed as densely as the particular drive's technology allows. The packing of the rest of the disks is changed depending on the type of disk. Zone recording was pioneered and patented by Chuck Peddle in 1961 while working for General Electric. With a CAV-drive the data on the outer tracks are the same angular width of those in the centre, and so less densely packed. Using ZBR instead, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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