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During 1976, Steve Wozniak began work on the Apple II, and left HP to join Apple computer. In March 1977, Apple Computer moved from Jobs's garage to an office in Cupertino. Apple Computer delivered its first Apple II system, for US$1295 in April 1977.[132] Steve Jobs once said the Apple II could be described as an "appliance" computer. The Apple II was the first computer to be enclosed in plastic.[133] Jobs insisted that molded plastic was essential to the computer as a consumer item. The desired effect was evidently achieved. The Apple II was “elegantly styled" and it became compared to an "overgrown pocket calculator".[134] Ten months after its introduction, Apple Computer began work on an enhanced Apple II with custom chips, code-named Annie, in 1978. At the same year, they began work on a supercomputer named Lisa; it featured a bit-sliced architecture. After two and a half years, 50,000 Apple II units had been sold until 1979. Nearly one-third of Canadians credited the Apple II as the first personal computer which having the most impact on society.[135]