IntroductionI think everyone knows what input devices are including me. But most people don't know the details of this part of the computer until the second teacher teaches us this concept of computer system, then I really understand the meaning of the input. What is input? Input is any data and instructions placed into memory if a computer. These devices collect data and convert it into electronic format for use by the computer. This hardware device allows users to send data and instructions to a computer. Some of them are devoid of input devices, for example TV is the one that does not allow users to interact with it only as a viewing device. KEYBOARD The keyboard is classified as part of users' computer input devices. A keyboard is an input device that contains keys that users press to enter data and instructions into a computer. The entire keyboard contains input letters, punctuation marks, numbers and other symbols, which allows users to type data or write emails. Many desktop computer keyboards also have a numeric keypad on the right side of the keyboard. Most computers use enlarged keyboards. This type of keyboard has twelve or more function keys across the top. By the way, the function keys F1-12 are special keys for executing shortcuts and sending commands to the computer. To issue commands, users can press a function key in combination with other special keys (SHIFT, CTRL, ALT, and others). For example, the F5 key is usually used most often to refresh the screen. Just press the F5 key to show you the latest content on the screen. And this key can also help you in PowerPoint to quickly see the presentation in full screen. POINTING DEVICES Pointing devices are a hardware input device that allows the user to control the curs...... middle of paper...... element in an electronic image. The higher the number of pixels, the better the quality of the camera, but the more expensive the camera. Digital cameras have now become the preferred solution for most users over film cameras as the quality of photos taken has improved and the price has decreased. Another measure of your camera's photo quality is the number of buts it stores in a pixel. A pixel contains one or more bits of data. The fewer bits used to represent a pixel, the fewer colors and shades of gray can be represented. Each bit of pixel is sufficient for simple single-color images. Last time people have to go to the photo shop to drop off film to develop photos. It is convenient that digital cameras only use the USB cable to import images into the computer. By the way, you can edit them via computer editing software.