Wjw. Unix. Commodore. Draper. Calculators. No luxuries when programming an IBM 5150 PC. Implementing VisiCalc. I'm writing this in preparation for the Computer History Museum's The Origins and Impact of VisiCalcpanel on April 8th 2003. This is basically a draft and I hope to do some more editing as time permits and you should expect many typos until then.
I'm also going to continue to edit and change this as I remember details. This version incorporates corrections and suggestions from readers. Normally I would just post the update but for the sake of purity I'm going to leave V1 available, at least for now and will continue to repost this as I make corrections and improvements. For those interested in the changes (if I remember them aside from typos and miscalculating 3+5*4) Added a reference for RPN Added screen shots from the reference card at I will post incremental updates and try to catch up with a summary of what has changed in this section. Even simple decisions were only simple in context. The Apple's screen was 40 columns and 25 rows. The User Experience. Presents the History of SEGA. There will never be another SEGA. While their reign as a first-party has long ended, and the name hardly carries the cachet it once had, the industry owes deep debt to the former giant.
An innovator and an unrivaled creative powerhouse, they were perhaps the greatest single developer in gaming history. While rival Nintendo has shown an unmatched ability to maintain a small handful of blockbuster series, SEGA churned out brilliant original franchises one after another with such frequency they made it seem effortless. Their hit series were practically disposable, because they knew the next one would be just as good. All across the world, from Tokyo, to San Francisco, to Lyon, their studios always bet on the gamble, always took chances, and to their fans, they were always winners.
Unfortunately, SEGA didn't win many battles in the hardware market. Their history is riddled with mistakes – some that you probably know well, and a few you've never heard before, but all of them heartbreaking. BBC Four announces eighties computing drama. Just when you were thinking, 'why oh why are there no drama-documentaries about rivalries in the burgeoning home computer sector? ' BBC Four has only gone and announced one. Expected to be broadcast later this year, Syntax Era (get it?!) Charts the rivalry between Sir Clive Sinclair and Chris Curry, the former colleagues who went on to launch the ZX Spectrum and BBC Micro respectively. From The Guardian's report: Written by Tony Saint, the 90-minute drama will use archive footage to illustrate the buzz around Sinclair and Curry's inventions, with classic clips from programmes such as John Craven's Newsround.
Alexander Armstrong from comedy show Armstrong and Miller will take on the role of Sir Clive, while Martin Freeman is set to play Curry. Of course, from a gaming standpoint, it could be argued that the real battle of the time was between the Spectrum and the Commodore 64 - with the BBC Micro, Acorn Electron, Dragon 32 and Amstrad CPC peeking in from the periphery. Club 100: A Model 100 User Group. HP 200LX. Closed open Size comparison with 2007 Apple iPhone The HP 200LX (also known as Project Felix) is a personal digital assistant introduced by Hewlett-Packard in 1994. It was often called a palmtop computer, and it was notable that it was, with some minor exceptions, a MS-DOS-compatible computer in a palmtop format, complete with a monochrome graphic display, QWERTY keyboard, serial port, and PCMCIA expansion slot.
Description[edit] The HP 200LX has an Intel 80186 compatible embedded central processing unit named "Hornet", which runs at ~ 7.91 megahertz (which can be upgraded or overclocked to up to 15.8 MHz) and 1 to 4 MB of memory, of which 640 KB is RAM and the rest can be used for expanded memory (EMS) or memory-based storage space. Other Models[edit] HP 95LX[edit] The HP 95LX introduced the basic design in April 1991. HP 100LX[edit] The HP 100LX (also known as Project Cougar) is the direct predecessor of the 200LX. HP 1000CX[edit] HP OmniGo 700LX[edit] HP OmniGo 100[edit] Current usage[edit] DONHODGES.COM - FRESH IDEAS REACHING INTO THE 3RD MILLENIUM ... Bitsavers.org. Dusty Decks. Lisp’s birth and infancy was at MIT, but it began spreading to other places when John McCarthy went to Stanford and other project members graduated and moved on. At about this time, a project began to develop a new language, Lisp 2, that would extend Lisp to include ALGOL-like syntax, type-checking, and numeric, string, and array data types.
The project was a joint development of two “think tanks”, Information International, Inc. (III) System Development Corporation (SDC) in Santa Monica, California. The host computer for the Lisp 2 project was the AN/FSQ-32/V, a one-of-a-kind prototype built by IBM for the Air Force as a potential replacements for the SAGE AN/FSQ-7. Before the Lisp 2 project began, an innovative compiler-only implementation of Lisp 1.5 on the Q-32 was done by Robert Saunders and his colleagues. After the Lisp 2 project was terminated, the Q-32 at SDC was replaced with an IBM System/360. The Harvard Mark I. Our trip down mainframe lane starts and ends, not so surprisingly, with IBM.
Back in the 1930s, when a computer was actually a fellow with a slide rule who did computations for you, IBM was mainly known for its punched-card machines. However, the transformation of IBM from one of the many sellers of business machines to the company that later became a computer monopoly was due in large part to forward-looking leadership, at that time going by the name of Thomas Watson, Sr. The Harvard machine was a manifestation of his vision, although in practical terms, was not a technological starting point for what followed.
Still, it is worth looking at, just so we can see how far things have come. It all began in 1936, when Howard Aiken, a Harvard researcher, was trying to work through a problem relating to the design of vacuum tubes (a little ironic, as you will see). Aiken then approached Monroe Calculating Company, which declined the proposal. So Aiken took it to IBM. The Glamorous History of Portable Laptop Computers. Welcome to "The Glamorous History of Portable Computers. " This is a constantly expanding timeline that aims to capture the greatest moments in mobile computing. If this subject interests you I encourage you to check out some other great resources on the . The MCM/70 The MCM/70 was one of the first microcomputers released. It was also the first portable computer on the market. It had an 800Khz processor, between 2 and 8kb of RAM, 32kb of ROM, and a tiny one-line plasma display for output.
Unfortunately, time and obscurity have made it very difficult to find original specs and information about this first portable computer. The Osborne 1 The Osborne 1 was the first popular portable computer. This $1795 dollar state-of-the-art portable computer also came with an amazing 4 MHz processor; 64kb of ram; and not one, but two 92kb floppy drives. But that wasn't all. The Kaypro II Not to be outdone, Non-Linear Systems released their Kaypro II portable computer in 1982. The Compaq Portable TRS Model 100. Dimensions. IBM 7090/7094 Page. Welcome to Dave Pitts' IBM 7090 web page. The above picture is the console of the IBM 7090 that I worked on in the Department of Physics at Indiana State University. Due to space considerations the data channel consoles were bolted to the top of the main console. We used the system in conjunction with a Digital PDP-8/I to operate laboratory instrumentation. The original asm7090 was written in Fortran, by Phil Norisez and I, and ran on ISU's IBM 360/50.
WARNING: I've got limited bandwidth and large downloads during business hours, 8:00am to 5:00pm Mountain time, are likely to be terminated... In seeing some of the retrocomputing effort on behalf of the IBM 7090 I've got some links that may be of interest: asm7090 - Version 2.2.29: A Cross Assembler for the IBM 709/7090/7094. If you have any IBM 7070 or 7080 code or have programmed on these systems; please drop me a note. Retr0Bright » home. The programming languages behind "the mother of all demos&q.
On December 9, 1968, Dr. Douglas C. Engelbart and the Augmentation Research Center (ARC) at Stanford Research Institute staged a 90-minute public multimedia demonstration at the Fall Joint Computer Conference in San Francisco. It was the world debut of personal and interactive computing: for the first time, the public saw a computer mouse, which controlled a networked computer system to demonstrate hypertext linking, real-time text editing, multiple windows with flexible view control, cathode display tubes, and shared-screen teleconferencing. To commemorate this famous event, commonly known as the mother of all demos, SRI held a 40th anniversary celebration at Stanford today. As a small tribute to the innovative ideas that made up the demo, it is befitting to mention some of the programming languages that were used by Engelbart's team.
A few were mentioned in passing in the event today, making me realize that they are not that widely known. Create your own Version of Microsoft BASIC for 6502. If you disassemble a single binary, you can never tell why something was done in a certain way. If you have eight different versions, you can tell a lot. This episode of “Computer Archeology” is about reverse engineering eight different versions of Microsoft BASIC 6502 (Commodore, AppleSoft etc.), reconstructing the family tree, and understanding when bugs were fixed and when new bugs, features and easter eggs were introduced.
This article also presents a set of assembly source files that can be made to compile into a byte exact copy of seven different versions of Microsoft BASIC, and lets you even create your own version. Microsoft BASIC for MOS 6502 First written in 1976, Microsoft BASIC for the 8 bit MOS 6502 has been available for virtually every 6502-based computer including the Commodore series (PET, C64), the Apple II series, Atari 8 bit machines, and many more. These are the first eight versions of Microsoft BASIC: Name: Name of the computer system or BASIC interpreter Then it asks:
The Most Collectible PCs of All Time. Doing Personal Computer Software Development in the early 80s. Welcome to the Retrocomputing Archive.