You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "when was the first personal computer sold to the public?" whose answer is 1981.
Each document should contain about 30 words, and these documents should contain useful information.

Query: first personal computer sold to the public
Useful Output:

Doc 1: Weighing in at just 24 pounds, the Osborne 1 (above) was the world's first commercially successful portable microcomputer. It was powered by a
Doc 2: The First PCs · The Altair computer, from the mid-1970s. Courtesy: Computer History Museum · An Apple II from the 1970s. Courtesy: Thiravudh
Doc 3: The name of the computer is the Kenbak-1 Digital Computer. It is considered the world's first commercially-available personal computer, and it will be for sale.
Doc 4: The Micral N was the world's first “personal computer”(1973). It was not a commercial success. The Epson HX-20 (1981) was the world's first
Doc 5: Altair 8800 The first personal computers, introduced in 1975, came as kits: The MITS Altair 8800, followed by the IMSAI 8080, an Altair clone.