Apple Computer 1

Motherboard
Date of appearance: 1976
Trademark: Apple
Designer: Steve Wozniak
Made in: Palo Alto, California, USA
Quantity: approx. 200 pieces
Introductory price: 666.66 US Dollars
Dimensions: 381 × 228 × 63.5 mm
Tags: featured


Apple 1 Motherboard, with label "Apple Computer 1/Palo Alto. Ca. Copyright 1976." Includes circuit board with four rows A-D, and columns 1-18; MOS Technologies 6502 microprocessor, labeled MCS 6502 1576; keyboard interface and connector; 8K bytes RAM in 16-pin 4K memory chips; 4 power supplies including 3 capacitors; firmware in PROMS (A1, A2); low-profile sockets on all integrated circuits; inked "01-0070" on underside; heatsink; expansion connector; cassette board connector; and original cassette interface, labeled Apple 1 Cassette Interface Copyright 1976 with "G" lettered in triangle on reverse. Overall approximately 15 x 9 x 2 1/2 inches, on four corner wooden pedestals. Apple 1 Motherboard came with vintage keyboard with pre-7400 series military spec chips; Sanyo monitor model no VM4204; custom power supply in wooden box. Lot also includes two vintage tape-decks; facsimile owner's manual, schematic and BASIC tape. Steve Wozniak had demonstrated his breakthrough design at the Homebrew Computer Club in Palo Alto and, with his high-school buddy Steve Jobs, obtained an order from Byte Shop owner, Paul Terrell, for 50 assembled boards to be delivered in 30 days. The Apple-1 was built by Wozniak in the Jobs' family garage (or possibly Jobs' sister's bedroom). Approximately 200 units were eventually made, but this is thought to be one of the first batch of 50 with the PCB manufacturer unidentified on the front copper layer of the board. Byte Shop order sold extremely well (at a retail price of $666.66), there were at least some remainders from the additional 150 and many of these were recycled into Apple II's. Additionally, at least some of the Apple-1 first users sent them back for conversion to Apple II's or modified them on their own. In this context, the state of preservation of this example is particularly remarkable.

Apple Computer 1
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