Creation of Keyboard in Photoshop 4 steps
This result does not create the entire keyboard, and only one key. The remaining you can create yourself.
1. We'll start by creating a new layer Layer / New / Layer and draw the shape of a key - it is a rectangle (slightly higher than broad) with rounded corners. Here we use a tool Rounded Rectangle Tool
2. To highlight the key result we use Layer / Layer Style / Bevel and Emboss with Depth 1, 000%, Size , depending on the size of the drawing, Opacity with Highlight Mode and Shadow Mode 65%:
3. Highlight the center of the drawing and fill it using the Reflected Gradient Tool key color (background) and a slightly darker shade (foreground)
4. On a new layer add a black symbol (eg, the selected letter of the alphabet), the Opacity to 75% decrease in the Layer / Layer Style / Blending Options