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## Keyboard Types ### Alphanumeric Keyboards * Contains letters, numbers and symbols * Modeled after typewriter keyboard, known as a QWERTY keyboard * When a key is pressed, a unique digital code is sent to the computer Keyboards can be connected to a computer in the following ways: * USB port *...

## Keyboard Types ### Alphanumeric Keyboards * Contains letters, numbers and symbols * Modeled after typewriter keyboard, known as a QWERTY keyboard * When a key is pressed, a unique digital code is sent to the computer Keyboards can be connected to a computer in the following ways: * USB port * Wireless radio frequency or WiFi * On screen * Built in (laptop) ### Special-Function Keyboards * Designed for a particular purpose #### Examples of Special-Function Keyboards: * **Braille keyboard:** * Keys marked with raised dots * Users can type and enter text by feeling the Braille symbols * **Eye-controlled keyboard:** * Designed for people with physical disabilities * Lets a user enter information by focusing their eyes on individual keys on the keyboard * **Concept keyboard:** * Flatbed of contact switches covered by a flexible membrane * Whole words, pictures or symbols are superimposed over each contact * Used in early learning, restaurants and places where a normal keyboard is risky ### Did you know? * The traditional QWERTY keyboard was patented in 1867. * It was designed to slow down the speed of typists so that the typewriter keys would not jam.