Electronics Today International

Articles

  • Demand for ZX81 Outstrips SupplyZX81
    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.
  • Four-digit Multiplexed BCD to ZX81 AdaptorZX81 Hardware project
    Interface binary-coded decimal (BCD) devices to the ZX81.
  • Improving Your ZX-81ZX81 Hardware project
    Circuit modification to improve reliability of SAVEs.
  • New Magazine for Timex Sinclair UsersZX81 TS 1000
    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.
  • New Sinclair ComputerZX81 ZX Spectrum
    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.
  • POKEing on the ZX80ZX80 Type-in program
  • Servo InterfaceZX81 Hardware project
    Connect a ZX81 to servos.
  • Sinclair ZX81 - Toy or tool?ZX81 Hardware review
  • Sinclair's LatestZX81 Hardware review
    Review of the ZX81.
  • Supply ProtectorZX81 Hardware project
    Battery backup power supply for ZX81.
  • Vector GraphicsZX81 Hardware project
    Hardware and software to interface a ZX81 to an oscilloscope or other vector display and draw draphics.
  • ZX 80-81 ProgramsZX80 ZX81 Type-in program
    Four programs: trigonometric Fourier synthesis, program labels, dodge game, rapid descent.
  • ZX Analogue-to-Digital ConverterTS 1000 ZX Spectrum Hardware project
    Fast eight-bit analog to digital converter project.
  • ZX Interface BoardZX81 Hardware project
    Input/output interface board that works with either ZX81 or Spectrum.
  • ZX Interfaces ExplainedZX81 ZX Spectrum Reference
    The ins and outs of Sinclair computers. Details are given for the Spectrum as well as the ZX81.
  • ZX80 ReviewZX80
    A complete, ready-to-run computer for under $350 would make anyone sit up and take notice.
  • ZX81 Background ReverseZX81 Hardware project
    Circuit to invert ZX81 video signal, provides white on black.
  • ZX81 Burgler AlarmZX81 Hardware project
  • ZX81 ImprovementsZX81
    Simple alternatives to hardware modifications for loading/saving problems on the ZX81.
  • ZX81 Printer ReviewHardware review
  • ZX81 UpdateZX81 Type-in program
    Update on accessories, software, a BASIC program, notes on the Spectrum, KRAKIT, fast load software, and a machine language program.
  • ZX81 User-Defined GraphicsZX81 Hardware project
    Small circuit to allow internal RAM to be used for user-defined graphics when the computer has 16K RAM pack attached.

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