IntroductionI think everyone knows what input devices are, including me. But most of the time people don't know the details of this part of computer until the second lecturer teaches us this concept of computer system, then I really understand the meaning of the input. What is entry? Input is any data and instructions entered into memory if a computer. These devices collect data and convert it into electronic form for use by the computer. This hardware device allows users to send data and instructions to a computer. Some of them lack input devices, such as the TV, which do not allow users to interact with it, but only as a display device. KEYBOARDThe keyboard is classified among computer input device users. 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 enter data or write emails. Many desktop computer keyboards also have a number pad on the right side of the keyboard. Most computers use enlarged keyboards. This type of keyboard has twelve or more function keys on the top. By the way, the F1-12 function keys are special keys for performing shortcuts and issuing 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 generally used more often to refresh the screen. Just press the F5 key to view the latest content on your screen. And this key can also help you in PowerPoint to quickly see the slideshow in full screen. POINTING DEVICE Pointing devices are a hardware input device that allows the user to control the cursor...... 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 become the most popular camera solution for most users today, compared to film cameras, because the quality of the image they take has improved and their price has decreased. Another measure of the camera's photo quality is the number of cells 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 pixel bit is sufficient for simple monochrome images. Last time people had to go to the photo store to drop off their film to develop their photos. Digital cameras are convenient, only use a USB cable to help you import images to a computer. By the way, you can edit them via computer editing software.