List of all original Apple-1.
If you are a first time visitor and not familiar with iconic Apple-1 computers, please read all the information first.
Go to previous entry #26 - Go to next entry #28
Note: This is the 27th entry in the list and not the 27th Apple-1 produced. The Apple-1 does not have a regular serial number. Only some Apple-1 got a handwritten serial number.
Apple-1 #27 "Liza Loop", 1st batch
Apple-1 #27 "Liza Loop", 1st batch
Apple-1 #27 "Liza Loop", 1st batch
Apple-1 #27 "Liza Loop", 1st batch
Apple-1 #27 "Liza Loop", 1st batch
Apple-1 #27 "Liza Loop", 1st batch
Apple-1 #27 "Liza Loop", 1st batch
Apple-1 #27 "Liza Loop", 1st batch
Apple-1 #27 "Liza Loop", 1st batch
Apple-1 #27 "Liza Loop", 1st batch
Information about ceramic PIA on Liza Loop's Apple-1.
The first ever delivered Apple-1 computer. Handed-over by Steve Wozniak himself.
Thankfully, Apple-1 Registry caretaker Achim Baqué had a chance to talk to her for over 1.5 hours in 2019. Here is the updated history of this unique Apple-1:
Liza Loop was the first owner, and it is still in the hands of her LO\*OP Center (Learning Options \* Open Portal, founded in 1975, a non-profit organization). Liza has always been deeply involved in computer history. For example, she wrote the user manuals for the Atari 400 and 800.
Liza Loop was a teacher at Windsor Junior High School in Windsor. The Apple-1 was used for her math class. She had been using computers for years before that. She remembers using the MITS Altair in 1975 and, in 1972, a teletype with a modem probably connected to Berkeley University’s HP 2000 series computer. Liza used a remarkable number of different computers, including a PDP-8.
Liza met Steve Wozniak (Woz) for the first time at the Homebrew Computer Club. Liza was the first person Woz met who used a computer in a classroom. Because of this, he gave her an Apple-1 for free.
Woz delivered the Apple-1 himself. It was the first Apple-1 ever delivered. In February 2023, Woz told Achim Baqué at dinner that Steve Jobs demanded US\$300 from Woz for donating it to Liza.
The Apple-1 never worked reliably. It took 20 minutes to load BASIC, but it crashed too often. It was hardly usable in a 40-minute class period.
Later, Woz tried for several months to fix it—unsuccessfully. But one day, he came back with a surprise for Liza: one of the very first Apple IIs—serial number 10.
The 6502 was lent to someone who never returned it. Someone later gave Liza another 6502 at the Vintage Computer Festival at the Computer History Museum in Mountain View, CA, and that chip is still present in this Apple-1 today. Maybe Liza used the original 6502 for her Apple II #10 and gave away the Apple II’s 6502.
4 KB memory chips from the Apple-1 were probably taken for use in another computer.
no auction
(see History for more information)
Synertek plastic CPU 6502 (7808, incorrect date code), white ceramic Synertek PIA S6820 (7545), 4 KB plastic DRAM. Blue capacitors.
Original Apple Cassette Interface
Very good. Replaced CPU.
Jul 29, 2025
May 16, 2019: Verification status
May 23, 2019: Description of picture(s)/video(s)
May 23, 2019: 4 picture(s) added
May 23, 2019: Owner added. Location. Additional info
May 23, 2019: Components (shortlist). Components. State. Equipment. History
Aug 29, 2019: Verification status. Description added. History
Nov 16, 2021: Working condition
Aug 09, 2022: 6 picture(s) added
Mar 01, 2023: Additional information. History
Jul 29, 2025: Components. State. History
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