Final answer:
The sensation of fingers touching keyboard keys is communicated by mechanoreceptors such as Merkel cells and Meissner's corpuscles, which send signals to the brain where the touch is perceived.
Step-by-step explanation:
When you are typing on a computer keyboard, the sensation of your fingers touching the keys is most likely communicated by mechanoreceptors. These are specialized nerve endings in the skin that respond to mechanical stimuli such as pressure, vibration, and texture. The touch receptors responsible for conveying the feeling of the keys on your fingertips include Merkel cells, which are sensitive to low frequency vibrations, and Meissner's corpuscles, which are involved in sensing light touch.
These mechanoreceptors are concentrated in areas such as the fingertips, allowing detailed perception necessary for activities like typing. As your fingers depress the keys, signals from these receptors are sent through peripheral nerves to the spinal cord and eventually to the brain, where the sensation is processed and perceived.