Tag: keyboard encoder

2 matching upgrades

Showing 2 products.

StatusProductWhat it doesCompatibilityLinks
AvailableChecked Jul 24, 2026JCM Universal Keyboard Encoderby Joe's Computer Museum
keyboardkeyboard encoderreplacement partrepair

Replaces the General Instrument AY-5-3600-PRO keyboard encoder in several Apple computers.

The current page offered jumper and socket selections on 2026-07-24. Original Apple II and II Plus support applies to non-Datanetics keyboards; Datanetics keyboards use the separate MM5740AAE replacement.

Sources
  • Apple II Exact model
  • Apple II Plus Exact model
  • Apple IIe Exact model
  • Apple IIc Exact model
  • Apple IIc Plus Bus/interface
  • Apple III Exact model
  • Apple III Plus Exact model
Universal Keyboard Encoder product page
AvailableChecked Jul 24, 2026MM5740AAE Replacement Keyboard Encoderby Joe's Computer Museum
keyboardkeyboard encoderreplacement partrepair

Replaces the National Semiconductor MM5740AAE/N encoder used by Datanetics-style Apple II keyboards.

The current page offered socket selections on 2026-07-24. This version is specifically for systems using the MM5740AAE/N and a Datanetics-style keyboard; non-Datanetics Apple II keyboards use JCM's AY-5-3600-PRO replacement instead.

Sources
  • Apple-1 Bus/interface
  • Apple II Exact model
  • Apple II Plus Exact model
MM5740AAE encoder product page