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Percom
Percom Data was an early microcomputer company formed in 1976 to sell peripherals into the emerging microcomputer market. They are best known for their floppy disk systems, first for S-100 machines, and the later for other platforms like the TRS-80 and the Atari 8-bit family. The company was purchased by Esprit Systems in 1984. Origins Percom started after the meeting that produced the Kansas City standard for storing data on cassette tapes. The final version of the standard was written in February 1976, co-authored by Lee Felsenstein and Harold Mauch. Mauch published an article on the technical aspects of the standard in the next month's ''Byte'' magazine, entitled "Digital Data on Cassette Recorders". Mauch and his wife Lucy started what was originally PerCom Data that same month, selling the ''CIS-30'' adaptor allowing any portable cassette player to be connected to the Motorola 6800-based micros from SWTPC. The CIS-30 was a success, and soon followed by similar devices for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PerCom Cassette Interface Dec 1977
Percom Data was an early microcomputer company formed in 1976 to sell peripherals into the emerging microcomputer market. They are best known for their floppy disk systems, first for S-100 machines, and the later for other platforms like the TRS-80, TRS-80 and the Atari 8-bit family. The company was purchased by Esprit Systems in 1984. Origins Percom started after the meeting that produced the Kansas City standard for storing data on cassette tapes. The final version of the standard was written in February 1976, co-authored by Lee Felsenstein and Harold Mauch. Mauch published an article on the technical aspects of the standard in the next month's Byte magazine, ''Byte'' magazine, entitled "Digital Data on Cassette Recorders". Mauch and his wife Lucy started what was originally PerCom Data that same month, selling the ''CIS-30'' adaptor allowing any portable cassette player to be connected to the Motorola 6800-based micros from SWTPC. The CIS-30 was a success, and soon followed by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Percom
Percom Data was an early microcomputer company formed in 1976 to sell peripherals into the emerging microcomputer market. They are best known for their floppy disk systems, first for S-100 machines, and the later for other platforms like the TRS-80 and the Atari 8-bit family. The company was purchased by Esprit Systems in 1984. Origins Percom started after the meeting that produced the Kansas City standard for storing data on cassette tapes. The final version of the standard was written in February 1976, co-authored by Lee Felsenstein and Harold Mauch. Mauch published an article on the technical aspects of the standard in the next month's ''Byte'' magazine, entitled "Digital Data on Cassette Recorders". Mauch and his wife Lucy started what was originally PerCom Data that same month, selling the ''CIS-30'' adaptor allowing any portable cassette player to be connected to the Motorola 6800-based micros from SWTPC. The CIS-30 was a success, and soon followed by similar devices for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TRS-80
The TRS-80 Micro Computer System (TRS-80, later renamed the Model I to distinguish it from successors) is a desktop microcomputer launched in 1977 and sold by Tandy Corporation through their Radio Shack stores. The name is an abbreviation of ''Tandy Radio Shack, Z80 icroprocessor'. It is one of the earliest mass-produced and mass-marketed retail home computers. The TRS-80 has a full-stroke QWERTY keyboard, the Zilog Z80 processor, 4 KB dynamic random-access memory (DRAM) standard memory, small size and desk area, floating-point Level I BASIC language interpreter in read-only memory (ROM), 64-character per line video monitor, and a starting price of US$600 (equivalent to US$ in ). A cassette tape drive for program storage was included in the original package. While the software environment was stable, the cassette load/save process combined with keyboard bounce issues and a troublesome Expansion Interface contributed to the Model I's reputation as not well-suited to serious ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kansas City Standard
The Kansas City standard (KCS), or ''Byte'' standard, is a data storage protocol for standard cassette tapes at . It originated in a symposium sponsored by Byte (magazine), ''Byte'' magazine in November 1975 in Kansas City, Missouri to develop a standard for the storage of digital microcomputer data on inexpensive consumer quality cassettes. The first systems based on the standard appeared in 1976. One variation on the basic standard is CUTS, which is identical at 300 bit/s, but with an optional 1200 bit/s mode. CUTS is the default encoding used by several later machine families, including those from Acorn Computers, Acorn and the MSX. MSX added a higher 2400 bit/s mode that is otherwise similar. The 1200 bit/s mode of CUTS was used as the standard for cross-platform BASICODE distribution. KCS originated from the earliest days of the microcomputer revolution, among other prolific protocols. Most home computers of the era have List of cassette tape data storag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atari DOS
Atari DOS is the disk operating system used with the Atari 8-bit family of computers. Operating system extensions loaded into memory were required in order for an Atari computer to manage files stored on a disk drive. These extensions to the operating system added the disk handler and other file management features. The most important extension is the disk handler. In Atari DOS 2.0, this was the File Management System (FMS), an implementation of a file system loaded from a floppy disk. This meant at least an additional RAM was needed to run with DOS loaded. Versions There were several versions of Atari DOS available, with the first version released in 1979. Atari was using a w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SWTPC
Southwest Technical Products Corporation, or SWTPC, was an American producer of electronic kits, and later complete computer systems. It was incorporated in 1967 in San Antonio, Texas, succeeding the Daniel E. Meyer Company. In 1990, SWTPC became Point Systems, before ceasing a few years later. History In the 1960s, many hobbyist electronics magazines such as ''Popular Electronics'' and ''Radio-Electronics'' published construction articles, for many of which the author would arrange for a company to provide a kit of parts to build the project. Daniel Meyer published several popular projects and successfully sold parts kits. He soon started selling kits for other authors such as Don Lancaster and Louis Garner. Between 1967 and 1971, SWTPC sold kits for over 50 ''Popular Electronics'' articles. Most of these kits were intended for audio use, such as hi-fi, utility amplifiers, and test equipment such as a function generator based on the Intersil ICL8038. Many of these early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Esprit Systems
Esprit Systems Inc. was a vendor of computer terminal products created as a spin-off from Hazeltine Corporation's terminal division in January 1983. The name refers to the Hazeltine Esprit terminal, which division management felt the parent company was not properly marketing. The company sold a variety of terminals, adding other computer peripherals with their purchase of Percom in 1984. The new company quickly ran into financial difficulty and sold 49% of the company to its primary Taiwanese manufacturer, ADI, in March 1986, followed by a majority purchase by ADI in 1988. By the early 2000s their primary products were Windows CE-based thin client terminals. The last updates to the company web page were in 2003. References * * * {{comp-stub Defunct computer hardware companies Thin clients Defunct computer companies of the United States ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atari 810
The Atari 810 is the official floppy disk drive for the Atari 400 and 800, the first two models in the Atari 8-bit family of home computers. It was released by Atari, Inc. in 1980. The single-density drive provides 90 kB of storage. The 810 has a data transfer rate of 6 kbps in most cases and a number of reliability issues. Third-party enhancements such as the Happy 810 address these problems as do replacement drives like the Indus GT with more storage and other features. At the same time as the 810, Atari announced the double-density Atari 815, allowing 180 kB per disk, with two drives in one case. It was never put into full production. The 810 was replaced by the Atari 1050 with the release of the XL series machines in 1983. It was replaced in turn in 1987 by the XF551 with a double-sided, double-density 360 kB mode. History Atari vs. Apple The machines that emerged as the Atari 8-bit family had originally been designed as part of a project to develop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limited Company
In a limited company, the liability of members or subscribers of the company is limited to what they have invested or guaranteed to the company. Limited companies may be limited by Share (finance), shares or by guarantee. In a company limited by shares, the liability of members is limited to the unpaid value of shares. In a company limited by guarantee, the liability of owners is limited to such amount as the owners may undertake to contribute to the assets of the company, in the event of being wound up. The former may be further divided in public companies (public limited company, public limited companies) and private companies (private limited company, private limited companies). Who may become a member of a private limited company is restricted by law and by the company's rules. In contrast, anyone may buy shares in a public limited company. Limited companies can be found in most countries, although the detailed rules governing them vary widely. It is also common for a distinct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Digital
Western Digital Corporation (WDC, commonly known as Western Digital or WD) is an American computer drive manufacturer and data storage company, headquartered in San Jose, California. It designs, manufactures and sells data technology products, including data storage devices, data center systems and cloud storage service A file-hosting service, cloud-storage service, online file-storage provider, or cyberlocker is an internet hosting service specifically designed to host user files. It allows users to upload files that could be accessed over the internet afte ...s. Western Digital has a long history in the electronics industry as an integrated circuit maker and a storage products company. It is one of the largest computer hard disk drive manufacturers, along with producing solid state drives and flash memory devices. Its competitors include the data management and storage companies Seagate Technology and Micron Technology. History 1970s Western Digital was founded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IBM PC
The IBM Personal Computer (model 5150, commonly known as the IBM PC) is the first microcomputer released in the IBM PC model line and the basis for the IBM PC compatible de facto standard. Released on August 12, 1981, it was created by a team of engineers and designers directed by Don Estridge in Boca Raton, Florida. The machine was based on open architecture and third-party peripherals. Over time, expansion cards and software technology increased to support it. The PC had a substantial influence on the personal computer market. The specifications of the IBM PC became one of the most popular computer design standards in the world. The only significant competition it faced from a non-compatible platform throughout the 1980s was from the Apple Macintosh product line. The majority of modern personal computers are distant descendants of the IBM PC. History Prior to the 1980s, IBM had largely been known as a provider of business computer systems. As the 1980s opened, their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
