File:Keyboard Encoder PCB.jpg
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Size of this preview: 800 × 600 pixels. Other resolutions: 320 × 240 pixels | 640 × 480 pixels | 1,024 × 768 pixels | 1,280 × 960 pixels | 2,560 × 1,920 pixels | 3,648 × 2,736 pixels.
Original file (3,648 × 2,736 pixels, file size: 2.42 MB, MIME type: image/jpeg)
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Summary
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| Description |
English: This PCB fits inside the keyboard unit and contains the scan counter etc. The keyboard interface back to the main unit consists of 3 signals other than power, ground and the caps-lock LED. These signals are basically scan count increment (to look at the next key in the matrix), scan count reset (to start at the first key again) and a signal to say that the currently selected key is pressed.
There is one neat feature. When the reset line is asserted, the keydown line is asserted if any key on the keyboard is pressed. So the main unit can see if a key is pressed, and if so step through the keys in order to determine which one. |
| Date | |
| Source | https://www.flickr.com/photos/43851301@N02/53025836262/ |
| Author | tony_duell |
Licensing
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
- You are free:
- to share – to copy, distribute and transmit the work
- to remix – to adapt the work
- Under the following conditions:
- attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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This image was originally posted to Flickr by tony_duell at https://flickr.com/photos/43851301@N02/53025836262. It was reviewed on 13 July 2023 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:32, 13 July 2023 | | 3,648 × 2,736 (2.42 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by tony_duell from https://www.flickr.com/photos/43851301@N02/53025836262/ with UploadWizard |
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