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Alan Michael Sugar Trading and Sinclair Research offering the very latest in Computer Technology. The Amstrad 8256 with locoscript word processing, a VDU and a printer was perfect for the budding novelist. The Sinclair 128 needed to be linked to a TV and was more games orientated. The 128 and 256 numbers refered to the memory sizes - 128k and 256k.
By the way 1 gigabyte is 1000000k.