Early Apple II (II PLUS) Keyboard Encoder Board 1979 605-X105 820-0026-C For Sale
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Early Apple II (II PLUS) Keyboard Encoder Board 1979 605-X105 820-0026-C
Price: US $95.00
The Early Apple II Keyboard Encoder Board from 1979 is a vintage part designed specifically for the Apple II II+ computer. Made by Apple in the United States, this keyboard encoder board plays a critical role in translating keystrokes from the keyboard into computer commands. This piece of history is essential for restoring or maintaining the functionality of vintage Apple II systems, showcasing the craftsmanship and design of early computing technology. More from Google AI:The Apple II keyboard encoder board by The Keyboard Company is a separate small circuit board that converts raw keypresses into parallel ASCII data for the computer's motherboard.Overview and Function
Purpose: It translates key closures from the keyboard assembly into standard digital signals understood by the Apple II and Apple II+ CPU.
Key Components: Most versions use an encoder integrated circuit like the SMC KR3600-070 (replacing older single-chip solutions like the MM5740).
Manufacturer: Produced by The Keyboard Company, which manufactured keyboards and internal components for early Apple systems.
Features: Many encoder boards include a small switch to toggle the behavior of the Reset key, requiring either a direct press or a simultaneous Ctrl + Reset combination.
Design Advantage: Separating the encoder onto its own plug-in PCB allowed Apple and its suppliers to modify or source keyboard hardware variations more easily during the Apple II and II+ production lifecycle
Going through boxes of products used in Apple Computers left over from when our store closed June 2017. I generally have no way to now test these items and am attempting to find new homes for these products.
The item shown in the photo is the item we will ship.