The
Commodore PET was first announced, and later released, in 1977 (40 years ago).
It was a complete
All-In-One computer with built-in keyboard, monitor and storage media and was months ahead of the Apple II or TRS80 (Trash80!). In essence, it was an early Macintosh and was one of the first computers suitable for business use, rather than hobbyists.
On a side note, the PET never really took off in France for some reason (apparently 'pet' is slang for another word!). Later, Commodore released the VIC, which did not sell too well in Germany either, as it sounded like you were asking for a 'fick' which is German for something quite different!
At the time, my family ran a small 12th-Century hotel in Oxford, now made famous by my late friend Colin Dexter, who wrote the world famous Inspector Morse books (Colin reviewed examination papers with his colleagues, ate, drank and sometimes slept at our hotel). Our hotel was even featured on the front cover of one of the paperback versions of 'The Secret of Annexe 3'. Colin even gave me a few first edition signed copies of various Inspector Morse books over the years, which I guess must be worth a few pennies now!
When I was a boy, I was interested in computers and had built and programmed several of my own, but I really wanted a new Commodore PET...
Now, payroll software for the PET was non-existent at that time, but in early 1978 I persuaded my father to buy me a new PET, on the promise that I would write a complete staff wages program for the hotel. I explained that this would save him hours of pouring over his H.M. Gov tax tables and Kalamazoo wages sheets every week to work out the pay packets for the 12+ staff we had working at the hotel!