 At some point, Curry had a disagreement with Sinclair and formally left Science of Cambridge, but did not join the other Acorn employees at Market Hill until a little while later.The Acorn Microcomputer, later renamed the Acorn System 1, was designed by Sophie Wilson (then Roger Wilson).It was a semi-professional system aimed at engineering and laboratory users, but its price was low enough, at around GB£80, to appeal to the more serious enthusiast as well.