Electronics Today International

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Title Description Computers
Demand for ZX81 Outstrips Supply Sales have been at 1000 units a day and world-wide sales in October are reported at 40,000. Gladstone Electronics, who import the ZX81 direct from Britain placed the first order from North America but still have an enormous backlog of orders. Sinclair ZX81
Four-digit Multiplexed BCD to ZX81 Adaptor Interface binary-coded decimal (BCD) devices to the ZX81. Sinclair ZX81
Improving Your ZX-81 Circuit modification to improve reliability of SAVEs. Sinclair ZX81
New Magazine for Timex Sinclair Users A consortium of North American companies has come to gether to publish the first monthly magazine aimed solely at the 700,000 users of the TS1000 and ZX81. In what is one of the largest magazine launches into the home computer market, Timex Sinclair User will have an initial print run of 100,000. Sinclair ZX81, Timex/Sinclair 1000
New Sinclair Computer Spectrum announcement. Sinclair has also come to an agreement recently with Timex to distribute the computers in North America; the two companies have been in close alliance for some time as the ZX81 and Spectrum are both manufactured in Timex’s Scottish plant. Sinclair ZX Spectrum, Sinclair ZX81
POKEing on the ZX80 Sinclair ZX80
Servo Interface Connect a ZX81 to servos. Sinclair ZX81
Sinclair ZX81 - Toy or tool? Sinclair ZX81
Sinclair's Latest Review of the ZX81. Sinclair ZX81
Supply Protector Battery backup power supply for ZX81. Sinclair ZX81
Vector Graphics Hardware and software to interface a ZX81 to an oscilloscope or other vector display and draw draphics. Sinclair ZX81
ZX 80-81 Programs Four programs: trigonometric Fourier synthesis, program labels, dodge game, rapid descent. Sinclair ZX80, Sinclair ZX81
ZX Analogue-to-Digital Converter Fast eight-bit analog to digital converter project. Sinclair ZX Spectrum, Timex/Sinclair 1000
ZX Interface Board Input/output interface board that works with either ZX81 or Spectrum. Sinclair ZX81
ZX Interfaces Explained The ins and outs of Sinclair computers. Details are given for the Spectrum as well as the ZX81. Sinclair ZX Spectrum, Sinclair ZX81
ZX80 Review A complete, ready-to-run computer for under $350 would make anyone sit up and take notice. Sinclair ZX80
ZX81 Background Reverse Circuit to invert ZX81 video signal, provides white on black. Sinclair ZX81
ZX81 Burgler Alarm Sinclair ZX81
ZX81 Improvements Simple alternatives to hardware modifications for loading/saving problems on the ZX81. Sinclair ZX81
ZX81 Printer Review
ZX81 Update Update on accessories, software, a BASIC program, notes on the Spectrum, KRAKIT, fast load software, and a machine language program. Sinclair ZX81
ZX81 User-Defined Graphics Small circuit to allow internal RAM to be used for user-defined graphics when the computer has 16K RAM pack attached. Sinclair ZX81

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