The Vintage Sinclair ZX81 Personal Computer is a home computer manufactured by Sinclair in the United Kingdom. This classic piece of technology comes with its original manual, papers, and an assortment of coded programs to try.  Includes Boston Computer Users Group ZX81 newsletters.  This collection, is a valuable item for collectors and enthusiasts of vintage computing. The ZX81 is known for its simplicity and retro charm, offering a glimpse into the early days of personal computing. 

No 9 volt charger.  16 k ram adapter has modeling clay which was used to ensure a good attachment.