SJ84 ** Sinclair Projects : February 1984 **
p. 12 N -EPROM SERVICES                          .D    D/A converter (EPROM Services)
p. 30 F -HARDWARE:- CASSETTE DECKS & STORAGE     -BA+  Tape Head Renewal: Heading away from the usual worn-out problems
p. 32 F -HARDWARE:- GRAPHICS TOOLS               -BIM  Character Generator: Easy guide to generate new character sets
p. 12 L -HARDWARE:- GRAPHICS TOOLS               -LO3  Graphics Generator: Circuit training helps to build good characters
p. 36 F -HARDWARE:- SOUND & SPEECH               -BRG  Sound Board: Making your ZX-81 into a big noise
p. 14 F -HARDWARE:--MISCELLANEOUS                -PRJ  Digital Electronics: Playing Boole boosts circuit understanding
p. 26 F -HARDWARE:--MISCELLANEOUS                -BRG  Weather Station: A vane attempt to try and catch the wind
p. 11 N -HARDWARE:--MISCELLANEOUS                .P    Power supply adapter (Centec Electronic Systems, 7.95/6.95 variable/fi...
p. 12 L -PROGRAMMING:- GRAPHICS                  -FAM  Design Guide: Simulated circuits print out waveforms
p. 10 N CURRAH MICROSPEECH                       .L    Learning to speak Currah
p.  9 N TIME CONTROLLER                          .C    Counting the cost of making use of Glanmire's time
p. 11 N USP SPECTRUM EXPANSION                   .I    Ideal growth at high cost
p.  9 N ZX INTERFACE 2                           .I    Interface 2 lacks thought
SJ84 ** Sinclair Projects : April 1984 **
p. 48 N -HARDWARE:- ADD-ONS                      -BUD  Battery Support: Avoiding crashes caused by the refrigerator switch
p.  6 R -HARDWARE:- ADD-ONS                      .M    Multitron I/O port (13.50)
p. 22 F -HARDWARE:- PRINTING                     -SAR  Centronics Interface: Parallel interface for the Spectrum
p.  5 L -HARDWARE:- PRINTING                     -EGJ  Radio Teleprinter: Getting the latest news by ZX-81
p. 48 N -HARDWARE:- SOUND & SPEECH               -BRG  Problems on earlier sound board now overcome
p. 44 F -HARDWARE:--MISCELLANEOUS                -PRJ  Digital Electronics: Reducing power demand by mixing TTL and CMOS
p. 48 N -HARDWARE:--MISCELLANEOUS                -PRJ  Digital Logic: Getting switched-on to the capabilities of electronics
p. 48 N -PROGRAMMING:- GRAPHICS                  -FAM  Design Guide: Simulated circuits print out waveforms
p. 14 F -PROGRAMMING:- MISCELLANEOUS             -DA6  Flexi-File: Flexible response to growing piles of paper
p. 31 F -PROGRAMMING:- MISCELLANEOUS             -RUS  Maths Precision: Increasing accuracy boosts Spectrum uses
p.  6 R ALPHACOM 32                              .S    Sinclair thermals
p.  8 R CENTRONICS INTERFACE                     .K    Kempston interface prints defined graphics
p.  7 R FDC-1 FLOPPY DISK INTERFACE MK.1&2       .D    Disc driving on the Spectrum
p.  7 R JOYSTICK INTERFACE - PROGRAMMABLE        .J    Joystick variety
p.  6 R TRICHORD                                 .S    Sound made in stereo
p.  5 N ZX INTERFACE 1 + ZX MICRODRIVE           .Z    ZX Microdrive design frozen
SJ84 ** Sinclair Projects : June 1984 **
p.  7 N -AWARDS                                  .P    Peripheral of the Year
p.  5 N -CAMEL PRODUCTS                          .R    ROM-SP / PROMER-SP (Camel)
p.  6 N -HARDWARE:- ADD-ONS                      .M    Micro Interface Kit (Hobbyboard, 9.50)
p. 18 F -HARDWARE:- GRAPHICS TOOLS               -HO-  Digitiser: Making an automatic point on the Spectrum
p. 38 F -HARDWARE:- JOYSTICKS & INTERFACES       -HO-  Joystick: Avoid your joystick blocking the sound on the Spectrum
p.  6 N -HARDWARE:- SOUND & SPEECH               -BRG  Sound Board: Making your ZX-81 into a big noise
p. 13 F -HARDWARE:--MISCELLANEOUS                -MA-  Advice: Beware of the pitfalls in improving your Sinclair
p. 26 F -HARDWARE:--MISCELLANEOUS                -LEB  Locotrol: Develop your own micro-controlled model railway system
p. 42 F -HARDWARE:--MISCELLANEOUS                -PRJ  Digital Electronics: Using flip-flops to react logically to the outsid...
p.  6 N -HARDWARE:--MISCELLANEOUS                -PRJ  Digital Electronics: Playing Boole boosts circuit understanding
p.  6 N -PROGRAMMING:- GRAPHICS                  -FAM  Design Guide: Simulated circuits print out waveforms
p.  7 N COPY FOUR                                .P    Pigment printout
p.  4 N FDC-1 FLOPPY DISK INTERFACE MK.1&2       .I    Interface DOS now uses only 1K
p.  4 N LIGHT PEN                                .P    Pen has positional error
p.  5 N STACK LIGHT RIFLE                        .L    Light rifle is accurate up to 6ft.
p.  6 R TRICKSTICK                               .T    Tricky simulations of joystick actions
p.  4 R VISCOUNT 3.25" DISK DRIVE                .D    Disc system is twice as fast as Microdrive
p.  7 N VTX5000 MODEM                            .P    Peripheral of the Year
SJ84 ** Sinclair Projects : August 1984 **
p.  5 R -HARDWARE:- ADD-ONS                      .I    Instructive links: Interface Kits (Velleman UK)
p.  7 N -HARDWARE:- GRAPHICS TOOLS               -HO-  Digitiser: Making an automatic point on the Spectrum
p.  7 N -HARDWARE:- JOYSTICKS & INTERFACES       -HO-  Joystick: Avoid your joystick blocking the sound on the Spectrum
p. 31 F -HARDWARE:- MUSIC                        -CO-  Transistor Biasing: Amplified calculations & music
p.  8 F -HARDWARE:--MISCELLANEOUS                -MA-  Advice: Trapping errors on the important power source
p. 10 F -HARDWARE:--MISCELLANEOUS                -LEB  Locotrol: Making sure the turns are correct
p. 33 F -HARDWARE:--MISCELLANEOUS                -PRJ  Digital Electronics: Generating an accurate pulse of a given length
p.  7 N -HARDWARE:--MISCELLANEOUS                -PRJ  Digital Electronics: Playing Boole boosts circuit understanding
p.  7 N -HARDWARE:--MISCELLANEOUS                -LEB  Locotrol: Develop your own micro-controlled model railway system
p.  7 N -HARDWARE:--MISCELLANEOUS                -PRJ  Digital Electronics: Using flip-flops to react logically to the outsid...
p. 20 F -MISCELLANEOUS NEWS & FEATURES           -JOW  Money Plan: Play with figures on your ZX-81
p.  7 L -PROGRAMMING:- MISCELLANEOUS             -RUS  Maths Precision: Increasing accuracy boosts Spectrum uses
p.  5 R DOMESTIC CONTROLLER                      .E    Expensive I/O port
p.  6 R MI3 RGB MONITOR INTERFACE                .I    Ingenious RGB
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