MM5740AAC/N Replacement Keyboard Encoder

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MM5740AAC/N Replacement Keyboard Encoder

$25.99 – $26.99

Universal Replacement for the National Semiconductor MM5740AAc/N, also known by other names.

Encoder should support ANY machine requiring the MM5740AAc/N.

Has been fully tested in:

  • Heathkit H9

Encoder can support many other custom key mappings. If you would like a custom design, contact us for details.

BEFORE PURCHASING:

  • Is your encoder actually faulty? Please note that not all keyboard issues are caused by a faulty encoder. Any number of other support chips in your vintage machine may cause similar symptoms.
SKU: MM5740AAE-R_v1-1 Categories: , ,

Description

What’s this? It’s a replacement for the National Semiconductor MM5740AAC (a.k.a. MM5740AAC/N) keyboard encoder. Have a vintage computer with a broken encoder? Need an off-the-shelf solution for your hobbyist electronics project? This will fit the bill!

Designed by Joe Strosnider, all key functions have been meticulously mapped, traced and tested. Special thanks to Steven Hirsch for testing.

Each unit lovingly assembled by hand in Ohio. ♥

Additional information

Weight 0.3 oz
Dimensions 2.1 × 0.75 × 0.75 in
Include 40 Pin Socket?

Add Socket, Don't Add Socket

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