One of the primary input devices used with a computer that resemble those found on electric typewriters is a computer keyboard, but with some additional keys. The keyboard allows you to enter letters, numbers, and other symbols into a computer that can act as a command or be used to type text. Say no to plagiarism. Get a custom essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay QWERTY Keyboard Layout Shown below is an image of a QWERTY computer keyboard with each of the keys selectable. Keyboard types: Standard keyboards Laptop-sized keyboards Flexible keyboards Portable thumb keyboards Large keyboards Multifunctional keyboards Why is the keyboard used as an input device? A computer keyboard is considered an input device because it only sends data to a computer. Furthermore, he does not receive any information. Keyboard Ports and Interfaces Today, to connect to the keyboard in most desktop computers, USB or Bluetooth is used for wireless communication. A computer may have used PS/2, serial or AT (Din5) as its keyboard interface, before USB. On-screen input devices: On-screen keyboards Touch screen keyboards On-screen keyboards: An on-screen keyboard is a software-based keyboard available in most operating systems, especially Microsoft Windows, and other applications. An on-screen keyboard allows users to type text using a joystick or pointing device. In addition to improving input options for users with physical disabilities, it also serves as an alternative to the physical keyboard. On-screen keyboards are also known as "soft" keyboards or "soft" keyboards. To enter input, an on-screen keyboard displays a virtual keyboard on the screen for users. You can use any pointing device such as mouse, pen, joystick, etc. to operate it. Resizable and customizable are two features of this keyboard, it also allows you to change the typing mode, font, etc., as needed. Especially those of Windows 7 and later in some on-screen keyboards, are equipped with a predictive typing engine, which helps predict the words that users might type. However, most on-screen keyboards feature predictive text entry because typing on an on-screen keyboard is slower and more difficult than on a physical keyboard. An on-screen keyboard is an application that provides a visual on-screen keyboard that can be used in place of a physical keyboard. The on-screen keyboard can be manipulated by the mouse or another pointing device and can be configured in three layouts: 101-key view (standard keyboard) 102-key view (an additional backslash) 106-key view (useful additional characters to type in Japanese). Touch Screen Keyboards: Touch Screen Keyboard is not a standalone program. It has two new types of keyboard: alphabetic and alphanumeric. These changes were made to further emphasize the convenience of using the keyboard on touch screen devices. The alphabetical layout supports all languages ​​installed in the system (changing the input language also changes the layout of the on-screen keyboard). The alphanumeric layout allows you to type numbers and 35 other characters: arithmetic signs, parentheses, currency symbols, etc. Please note: this is just an example. Get a custom paper from our expert writers now. Get a Custom Essay The touch screen keyboard has several default features that.