A-ONE - Apple 1 Mini SBC

What is it?

The A-ONE is a compact single-board computer that faithfully implements all the functions of the original Apple 1 in a modern, miniaturized PCB form factor. Connect a monitor and PS/2 keyboard and you're ready to experience the machine that started it all — or use it via serial port connected to a terminal emulator, just like the RC6502.

It supports the original Apple 1 expansion bus, making it compatible with period-correct peripherals and modern expansion cards alike.

Why Was It Made?

The Apple 1 is the founding artifact of personal computing — designed by Steve Wozniak in 1976, only 200 were ever built, and surviving originals sell for hundreds of thousands of dollars at auction. The A-ONE brings that legendary machine to everyone: a faithful, functional reproduction you can actually use, program, and expand.

Whether you're a retrocomputing enthusiast, a computer history buff, or an educator teaching the roots of modern computing, the A-ONE gives you a genuine Apple 1 experience without the museum price tag.

Key Features

• Full Apple 1 hardware implementation on a compact PCB
• PS/2 keyboard input — connect any PS/2 keyboard directly
• Video output — connect to a monitor for authentic Apple 1 display
• Serial port support — use with any terminal emulator (RC6502-style workflow)
• Original Apple 1 expansion bus — compatible with expansion cards and peripherals
• Compact mini SBC form factor — clean, modern PCB layout
• Ideal for learning 6502 assembly, retrocomputing, and computer history

About the Apple 1

The Apple 1 was the first product sold by Apple Computer, designed entirely by Steve Wozniak. It featured a MOS 6502 CPU running at 1MHz, 4KB of RAM (expandable to 8KB), and a built-in video terminal interface — revolutionary for its time. Users typed programs directly in machine code or BASIC via a cassette interface. It was the machine that proved personal computing was possible.

The A-ONE captures that spirit: minimal, elegant, and endlessly hackable.

Usage Modes

• Standalone mode: Connect PS/2 keyboard + monitor, power on, and interact with the Apple 1 monitor program directly
• Terminal mode: Connect via serial port to a PC running a terminal emulator — perfect for development and debugging
• Expansion mode: Attach Apple 1-compatible expansion cards via the original expansion bus