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Venix
Venix is a discontinued version of the Unix operating system for low-end computers, developed by VenturCom, a "company that specialises in the skinniest implementations of Unix".VenturCom ships real-time Venix/386. Computer Business Review, 1 February 1990. Retrieved 23 March 2013. Overview A working version of Venix/86 for the IBM PC XT was demonstrated at COMDEX in May 1983. It was based on Version 7 Unix with some enhancements from BSD (notably vi, more and csh) and custom inter-process communication mechanisms. It was the first licensed UNIX operating system available for the IBM PC and its compatibles, supported read/write access to a separate DOS/FAT- partition and could run in as little as 128 KB (256 KB - 512 KB recommended). In September 1984, Venix/86 Encore was released; it supported a number of early PC-compatibles, including the AT&T 6300, the Zenith 150, the (first) NCR PC, and the Texas Instruments Professional Computer. Venix Encore, which then became ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DEC Professional (computer)
The Professional 325 (PRO-325), Professional 350 (PRO-350), and Professional 380 (PRO-380) are PDP-11 compatible microcomputers. The Pro-325/350 were introduced in 1982 and the Pro-380 in 1985 by Digital Equipment Corporation (DEC) as high-end competitors to the IBM PC. History Like the cosmetically similar Rainbow 100 and DECmate#DECmate II, DECmate II (also introduced at that time), the PRO series uses the LK201 keyboard and 400KB single-sided quad-density floppy disk drives (known as RX50), and offers a choice of color or monochrome monitors. For DEC, none of the three would be favorably received, and the industry instead standardized on Intel 8088-based IBM PC compatibles which are all binary program compatible with each other. In some ways, the PDP-11 microprocessors are technically superior to the Intel-based chips. While the 8088 is restricted to 1MB of memory because of its 20-bit address bus, DEC microprocessors are capable of accessing 4MB with their 22-bit addressing ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Olivetti M24
The Olivetti M24 is a computer that was sold by Olivetti in 1983 using the Intel 8086 CPU. The system was sold in the United States under its original name by Docutel/Olivetti of Dallas. AT&T and Xerox bought rights to rebadge the system as the AT&T PC 6300 and the Xerox 6060 series, respectively. (AT&T owned 25% of Olivetti around this time.) The AT&T 6300, launched in June 1984, was AT&T's first attempt to compete in the PC compatible market. It was also available in France as the PERSONA 1600, built by LogAbax. Versions The initial 1984 US version named AT&T 6300 came with either one or two 360 KB 5.25" floppy drives; a hard disk was not offered. In Europe, Olivetti launched a 10 MHz version: the Olivetti M24 SP, announced in November 1985, a contender for the title of "highest clocked 8086 computer" as its processor was the fastest grade of 8086-2, rated for a maximum speed of exactly the same 10 MHz. To support this, the motherboard now featured a switch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Equipment Corporation
Digital Equipment Corporation (DEC ), using the trademark Digital, was a major American company in the computer industry from the 1960s to the 1990s. The company was co-founded by Ken Olsen and Harlan Anderson in 1957. Olsen was president until he was forced to resign in 1992, after the company had gone into precipitous decline. The company produced many different product lines over its history. It is best known for the work in the minicomputer market starting in the early 1960s. The company produced a series of machines known as the Programmed Data Processor, PDP line, with the PDP-8 and PDP-11 being among the most successful minis in history. Their success was only surpassed by another DEC product, the late-1970s VAX "supermini" systems that were designed to replace the PDP-11. Although a number of competitors had successfully competed with Digital through the 1970s, the VAX cemented the company's place as a leading vendor in the computer space. As microcomputers improved in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PDP-11
The PDP–11 is a series of 16-bit minicomputers originally sold by Digital Equipment Corporation (DEC) from 1970 into the late 1990s, one of a set of products in the Programmed Data Processor (PDP) series. In total, around 600,000 PDP-11s of all models were sold, making it one of DEC's most successful product lines. The PDP-11 is considered by some experts to be the most popular minicomputer. The PDP–11 included a number of innovative features in its instruction set and additional general-purpose registers that made it easier to program than earlier models in the PDP series. Further, the innovative Unibus system allowed external devices to be more easily interfaced to the system using direct memory access, opening the system to a wide variety of peripherals. The PDP–11 replaced the PDP–8 in many real-time computing applications, although both product lines lived in parallel for more than 10 years. The ease of programming of the PDP–11 made it popular for general-pur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rainbow 100
The Rainbow 100 is a microcomputer introduced by Digital Equipment Corporation (DEC) in 1982. This desktop unit had a monitor similar to the VT220 and a dual-CPU box with both Zilog Z80 and Intel 8088 CPUs. The Rainbow 100 was a triple-use machine: VT100 mode (industry standard terminal for interacting with DEC's own VAX), 8-bit CP/M mode (using the Z80), and CP/M-86 or MS-DOS mode using the 8088. It ultimately failed to succeed in the marketplace which became dominated by the simpler IBM PC and its clones which established the industry standard as compatibility with CP/M became less important than IBM PC compatibility. Writer David Ahl called it a disastrous foray into the personal computer market. The Rainbow was launched along with the similarly packaged DEC Professional and DECmate II which were also not successful. The failure of DEC to gain a significant foothold in the high-volume PC market would be the beginning of the end of the computer hardware industry in Ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
VenturCom
Ardence was a software company headquartered in Waltham, Massachusetts with representatives in Washington, D.C.; Virginia Beach, VA; Chicago, IL; Denton, TX; and in Europe, the Middle East, Africa and India. It developed a software-streaming product and an embedded OEM development platform. It was founded in 1980 as VenturCom. On December 20, 2006, Citrix Systems Inc. announced an agreement to acquire Ardence. In 2008, some former Ardence executives acquired the Ardence programs from Citrix and formed IntervalZero. History VenturCom was founded in 1980, by Marc H. Meyer, Doug Mook, Bill Spencer and Myron Zimmerman. The company changed its name to Ardence in 2004. On December 20, 2006, Citrix Systems Inc. announced an agreement to acquire Ardence. In 2008, a group of former Ardence executives founded IntervalZero and acquired the Ardence embedded software business from Citrix. Citrix retained a minority ownership the firm. Products The enterprise software-streaming product depl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PCMag
''PC Magazine'' (shortened as ''PCMag'') is an American computer magazine published by Ziff Davis. A print edition was published from 1982 to January 2009. Publication of online editions started in late 1994 and continues . Overview ''PC Magazine'' provides reviews and previews of the latest hardware and software for the information technology professional. Other regular departments include columns by long-time editor-in-chief Michael J. Miller ("Forward Thinking"), Bill Machrone, and Jim Louderback, as well as: * "First Looks" (a collection of reviews of newly released products) * "Pipeline" (a collection of short articles and snippets on computer-industry developments) * "Solutions" (which includes various how-to articles) * "User-to-User" (a section in which the magazine's experts answer user-submitted questions) * "After Hours" (a section about various computer entertainment products; the designation "After Hours" is a legacy of the magazine's traditional orientation towar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
More (command)
In computing, more is a command to view (but not modify) the contents of a text file one screen at a time. It is available on Unix and Unix-like systems, DOS, Digital Research FlexOS, IBM/Toshiba 4690 OS, IBM OS/2, Microsoft Windows and ReactOS. Programs of this sort are called ''pagers''. more is a very basic pager, originally allowing only forward navigation through a file, though newer implementations do allow for limited backward movement. History The more command was originally written by Daniel Halbert, a graduate student at the University of California, Berkeley, in 1978. It was later expanded on by Eric Shienbrood, Geoff Peck (added underlining, single spacing) and John Foderaro (added -c, more environment variable history). It was first included in 3.0 BSD, and has since become a standard program in all Unix systems. less, a similar command with the extended capability of allowing both forward and backward navigation through the file, was written by Mark Nudelman betwee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
C Shell
The C shell (csh or the improved version, tcsh) is a Unix shell created by Bill Joy while he was a graduate student at University of California, Berkeley in the late 1970s. It has been widely distributed, beginning with the 2BSD release of the Berkeley Software Distribution (BSD) which Joy first distributed in 1978. Other early contributors to the ideas or the code were Michael Ubell, Eric Allman, Mike O'Brien and Jim Kulp. The C shell is a command processor which is typically run in a text window, allowing the user to type and execute commands. The C shell can also read commands from a file, called a script. Like all Unix shells, it supports filename wildcarding, piping, here documents, command substitution, variables and control structures for condition-testing and iteration. What differentiated the C shell from others, especially in the 1980s, were its interactive features and overall style. Its new features made it easier and faster to use. The overall style of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inter-process Communication
In computer science, interprocess communication (IPC) is the sharing of data between running Process (computing), processes in a computer system. Mechanisms for IPC may be provided by an operating system. Applications which use IPC are often categorized as client–server model, clients and servers, where the client requests data and the server responds to client requests. Many applications are both clients and servers, as commonly seen in distributed computing. IPC is very important to the design process for microkernels and nanokernels, which reduce the number of functionalities provided by the kernel. Those functionalities are then obtained by communicating with servers via IPC, leading to a large increase in communication when compared to a regular monolithic kernel. IPC interfaces generally encompass variable analytic framework structures. These processes ensure compatibility between the multi-vector protocols upon which IPC models rely. An IPC mechanism is either Synchroni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Compaq
Compaq Computer Corporation was an American information technology, information technology company founded in 1982 that developed, sold, and supported computers and related products and services. Compaq produced some of the first IBM PC compatible computers, being the second company after Columbia Data Products to legally Reverse engineering, reverse engineer the BIOS of the IBM Personal Computer. It rose to become the Market share of personal computer vendors, largest supplier of PC systems during the 1990s. The company was initially based in Harris County, Texas. The company was formed by Rod Canion, Jim Harris (entrepreneur), Jim Harris, and Bill Murto, all of whom were former Texas Instruments senior managers. All three had left by 1991 under a shakeup, which saw Eckhard Pfeiffer appointed president and CEO, serving through the 1990s. Benjamin M. Rosen, Ben Rosen provided the venture capital financing for the fledgling company and served as chairman of the board for 17 years ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
File Allocation Table
File Allocation Table (FAT) is a file system developed for personal computers and was the default file system for the MS-DOS and Windows 9x operating systems. Originally developed in 1977 for use on floppy disks, it was adapted for use on Hard disk drive, hard disks and other devices. The increase in disk drive capacity over time drove modifications to the design that resulted in versions: #FAT12, FAT12, #FAT16, FAT16, #FAT32, FAT32, and exFAT. FAT was replaced with NTFS as the default file system on Microsoft operating systems starting with Windows XP. Nevertheless, FAT continues to be commonly used on relatively small capacity solid-state storage technologies such as SD card, MultiMediaCard (MMC) and eMMC because of its compatibility and ease of implementation. Uses Historical FAT was used on hard disk drive, hard disks throughout the DOS and Windows 9x eras. Microsoft introduced NTFS with the Windows NT platform in 1993, but FAT remained the standard for the home use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
