Cat6.1

• Keyboard is the most important input device, with the standard external keyboard being the QWERTY keyboard
• An ergonomic keyboard separates the keys into two halves shaped like a wide "V", putting less stress on the hands and wrist
• A laser keyboard projects a virtual keyboard onto a level surface, where the user's finger keystroke breaks the infrared beam and reflects light back to the projector
• The second most important input device is the mouse, which is used to move the cursor on the screen by moving it along a flat surface
• Types of mice include wireless mice that use Wi-Fi or Bluetooth, cabled mice connected directly to the computer, and optical mice that use light to detect movement
• Pointing devices like touch screens, touch pads, and trackballs are used to control the movement of a cursor on a computer screen
• Joysticks are used to move the cursor position on a monitor screen and have a round ball at both lower and upper ends
• A stylus is used with a tablet or smartphone and is an alternative to using your finger on a touchscreen
• Scanners capture images for computer editing and display, with high-resolution scanners used for high-quality printing
• Different types of scanners include mouse scanners, handheld scanners, flatbed scanners, smartphone scanners, and multifunctional devices that can print, copy, and scan
• A digital camera captures images digitally and saves them on a memory card
• Reading devices like magnetic strip readers, barcode scanners, and QR codes are used to read information from cards or images
• Optical character recognition (OCR) scanners convert scanned documents, PDF files, or images into editable and searchable data