Jim Medlock
6 years ago
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# Key Value
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**Tier:** 1-Beginner
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Have you ever thought about what it means that the computer you are using is
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a digital device? Among other things it means that everything its capable of
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is achieved by translating a digital signal into a sequence of binary digits - 0's and 1's. These binary digits form codes used to represent data.
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The keyboard you used to retrieve this project description is a great example
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of this. Pressing a key generates a digital signal that is translated by the
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computer into a code representing the key that was pressed.
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The goal of the Key Value app is to display the encoded value on screen each
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time a key is pressed on the keyboard.
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## User Stories
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- [ ] User can see a display panel containing a text area where the key value
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and key code will be displayed along with display areas for four other
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indicators related to the keys on the keyboard - alt key, control key,
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meta key, and shift key.
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- [ ] User can see the key code and key value displayed in the display panel
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cooresponding to the key when it is pressed.
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- [ ] User can see the appropriate indicator change from 'False' to 'True'
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when the alt, control, meta, or shift key is pressed.
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## Bonus features
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- [ ] User can hear a unique tone played when a key is pressed.
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- [ ] User can see the background color of the key code and value change when
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a key is pressed.
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## Useful links and resources
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- [Digital Electronics](https://en.wikipedia.org/wiki/Digital_electronics)
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- [Keyboard Event](https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent)
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## Example projects
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[Javascript Keyevent Test Script](https://unixpapa.com/js/testkey.html)
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