Every computer comes with a keyboard. They are still the main way of taking text across the boundary into the computer. The one I'm using to type this course has 109 keys. Under each key is a pressure sensor that detects when the key has been pressed and sends an electronic signal into the computer. There, a small program called the BIOS (Basic Input/Output System) translates the signal into the appropriate numeric code. Other software stores that code in a suitable place in the memory.
List some of the drawbacks of keyboards.
Few people actually like using keyboards.
There has been concern recently about the damage they can cause to long-term users in the form of repetitive strain injury (RSI).
It takes special training to get the best out of them.
A keyboard is a pretty inefficient way of getting text into a computer. It is limited by the speed of its operator, and humans are slow and clunky compared with electronic machines. Computers have a phenomenal capacity to store information. A typical hard disk could store hundreds of full-length novels and encyclopaedias. But who is going to type all these in? And how long would it take?