The ZX Spectrum - Cambridge ESOL Reading Comprehension Exercise Instructions: Read through the text, answer the questions that follow, then click on 'Grade Me!' to view your score. In April 1982 a British company, headed by Sir Clive Sinclair, launched the ZX Spectrum computer on the market and sparked an IT revolution. The tiny black computer with its rubber keys ignited the home computer age both in the UK and elsewhere, which led to an boom in computer manufacturing and developed software programmers whose talent is still evident today. The ZX Spectrum was the brainchild of the entrepeneur Clive Sinclair, who had previously developed one of the first cheap and slim pocket calculators. For many people, the ZX Spectrum was their first experience of using a computer and it soon gained a loyal following. Even today, there are programs being written for the Spectrum, though it has not been made for years.
Free games: Download over 600 DOS games. Shareware and freeware, reviews, help getting games working! Port addresses for interfaces and peripherials undefined Port addresses for interfaces and peripherals Microprocessor Z80 normally has 256 addresses in Input-Output map. But as usual, by Spectrum is situation different. E.g. Spectrum by keyboard scan uses all 16 address bits by IN instruction, this could give theoretical 65536 port addresses. So, we have lower 8 bits, what should be enough for lot of peripherals. Here is table of used bits by must popular peripherals and 128K models: I didn't include port addresses of interface 1, I don't know whether decoding it uses. Back
Fighting for your Fantasy ZX Spectrum: 30 years old, and still one of the cheapest computers ever made Today is the 30th birthday of the ZX Spectrum, one of the most popular home computers ever made, and probably the single most important factor in the creation of the IT industry in the UK. The ZX Spectrum, made by Sinclair Research in Cambridge, England is usually considered the UK equivalent of the US-made Commodore 64. Hardware-wise, the ZX Spectrum was completely unremarkable. There was an 8-bit Zilog Z80A CPU, a graphics chip capable of outputting 32 columns by 24 rows (256x192px) with 15 colors, and either 16 or 48KB of RAM. At just £125 ($200), however, the ZX Spectrum was incredibly cheap. The Commodore 64 cost $600. How did Sinclair Research pull it off? In short, the ZX Spectrum was simply better engineered than its contemporaries — much like iPhone, except Apple uses its engineering and supply line advantage to squeeze out higher profits, rather than slashing prices. ZX Spectrum+, a later version that did away with the "dead flesh" keyboard
Staré hry – množstvo na voľné stiahnutie Store Actual size is 1.4 by 0.7 inch Update, January 2014: PJRC has scheduled another production run of Teensy 3.0 boards. We are not planning to discontinue Teensy 3.0. The Teensy USB Development Board is a complete USB-based microcontoller development system. Version 3.0 features a 32 bit ARM processor. All Teensy boards are shipped assembled and fully tested. Back Side: Shamutanti Hills - iOS App Released first week of spring ZX Spectrum: the legacy of a computer for the masses | Technology Celebrated today in a pitch-perfect Google Doodle, the 30th anniversary of the ZX Spectrum will have many veteran gamers swooning into a reverie of eighties nostalgia. Released on this day in 1982, the machine typified the British approach to industrial design – utilitarian but also idiosyncratic and characterful. It should have been buried by its more powerful contemporary, the Commodore 64, but somehow this strange little slab of plastic and rubber earned itself a considerable slice of the nascent home computing market, especially in Britain. Partly its success was about price. Since the launch of the ZX80 computer two years earlier, restless British inventor Clive Sinclair had been interested in computing for the masses. Using cheap components and a minimalistic approach to design, he was able to manufacture machines at a lower cost than rivals such as Acorn, Apple and Tandy. "We spent a full year with this massive jar in the house labelled 'Spectrum savings fund'.
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