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ZX Spectrum 16K/48K: Difference between revisions
From Sinclair Wiki
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Proper name of Spectrum 128
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The [[Spectrum+]] makes use of same circuit board as the rubber keyboard model of the Spectrum, but with a larger hard plastic keyboard instead. This keyboard features extra keys which map to combinations of keys on the rubber keyboard. These extra keys cannot be scanned individually in software, as the membrane for the new keyboard has the same connections as the membrane for the rubber key model. | The [[Spectrum+]] makes use of same circuit board as the rubber keyboard model of the Spectrum, but with a larger hard plastic keyboard instead. This keyboard features extra keys which map to combinations of keys on the rubber keyboard. These extra keys cannot be scanned individually in software, as the membrane for the new keyboard has the same connections as the membrane for the rubber key model. | ||
The same design of keyboard is also included in the [[ZX Spectrum | The same design of keyboard is also included in the [[ZX Spectrum 128]] and [[Sinclair QL]]. | ||
Spectrum+ machines sold by Sinclair were assembled with later issues of the Spectrum PCB, although Sinclair sold a conversion kit to owners of the rubber keyboard model to upgrade to the newer keyboard, and these are compatible with older issues of the PCB as well. PCBs can be swapped between rubber keyboard models and the Spectrum+ (a working PCB from a machine with a damaged case could be combined with a case from a machine with a damaged keyboard to produce a usable Spectrum+). It should be noted that the heat dissipation properties of the two cases do differ, and that this can cause failures due to overheating. | Spectrum+ machines sold by Sinclair were assembled with later issues of the Spectrum PCB, although Sinclair sold a conversion kit to owners of the rubber keyboard model to upgrade to the newer keyboard, and these are compatible with older issues of the PCB as well. PCBs can be swapped between rubber keyboard models and the Spectrum+ (a working PCB from a machine with a damaged case could be combined with a case from a machine with a damaged keyboard to produce a usable Spectrum+). It should be noted that the heat dissipation properties of the two cases do differ, and that this can cause failures due to overheating. | ||
