(Twitter Photo via @JohnFPfaff)

They’re gonna love this one at the Apple Genius Bar.

A New York professor took a stroll down memory lane on Twitter over the weekend after discovering a decades-old Apple IIe computer in the attic of his parents’ home. The machine still worked when John Pfaff turned it on, and even prompted him to restore a saved game after he popped a disk into it.

Pfaff figured the machine was probably 30 years old — and that putting hands on it again made him feel 10.

https://twitter.com/JohnFPfaff/status/1096973633736581121

https://twitter.com/JohnFPfaff/status/1096974001077932034

Pfaff, author of “Locked In,” an examination of the U.S. prison system, ended up tweeting throughout the night on Saturday as he tried numerous floppy disks in the 30-year-old computer.

He played a few games, reviewed notes left on disk sleeves and even read a letter on the machine that his late father wrote to him in 1986, when he was 11 and away at summer camp.

https://twitter.com/JohnFPfaff/status/1097020450729803776

https://twitter.com/JohnFPfaff/status/1096975770570969088

https://twitter.com/JohnFPfaff/status/1096978702922067968

https://twitter.com/JohnFPfaff/status/1096983770396311553

Pfaff was also blown away by a retweet from the famed science fiction author William Gibson, who reacted to Pfaff finding a copy of the 1988 game “Neuromancer” — loosely based on Gibson’s 1984 novel of the same name.

https://twitter.com/JohnFPfaff/status/1096995978018738176

Check out more of Pfaff’s tweets:

https://twitter.com/JohnFPfaff/status/1096985994895785984

https://twitter.com/JohnFPfaff/status/1096993135098580994

https://twitter.com/JohnFPfaff/status/1096997193779761152

https://twitter.com/JohnFPfaff/status/1097006861172252673

https://twitter.com/JohnFPfaff/status/1097016166328029184

https://twitter.com/bikeymikey70/status/1096988687999463424

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