In February 1982 Timex obtained a licence from Sinclair to sell the ZX81 directly through thousands of retail outlets in the US, paying Sinclair Research a 5 per cent royalty on all Sinclair hardware and software sold by Timex.
En febreiro de 1982 a Timex obtivo unha licenza coa Sinclair para vender o ZX81 directamente a miles de tendas retallistas nos EE.UU., pagando á Sinclair Research un 5% de royalty en tódolos hardware e o software Sinclair vendidos.