<br>Unique key design<br>Braille marking: Each key has a clear Braille marking with raised Braille dots, making it easy for the visually impaired to accurately identify the key functions by touch. The size, spacing and height of the Braille dots are carefully designed to be ergonomic and comfortable to the touch, making it easy to locate and operate quickly.<br>Texture differentiation: The letter keys may have a smooth texture, while the numeric keys and function keys have an angular or granular texture, which helps the visually impaired distinguish different types of keys more intuitively through the different sensations of finger touch and reduces the possibility of misuse.<br><br>User-friendly keyboard layout<br>Reasonable partition: The keyboard layout is reasonably partitioned according to the function, such as letter area, number area, function area, etc. There are obvious intervals or raised boundaries between each area, which is convenient for the visually impaired to perceive the position of different areas by touch. For example, there may be a raised line separating the numeric area from the alphabetic area, allowing users to clearly distinguish between the two areas.<br><br>Yellow and black colour scheme for visual aids<br>High contrast: The yellow and black colour scheme creates a sharp visual contrast, and for visually impaired people with some residual vision, this high-contrast colour scheme helps them see the keys and logos on the keyboard more clearly. The yellow keys stand out even more against the black background, helping them to better locate and operate the keyboard during use.<br>Visual Conformity: The yellow and black colour scheme is a classic and visually appealing scheme for most people. Yellow is often seen as a warning colour for high visibility, while black is used as a background colour to highlight the yellow keys and make the layout of the keyboard clearer, providing better visual recognition even in low-light environments.<br><br>Wired USB connection, stable and reliable<br>Stable Transmission: The wired USB connection ensures stable and fast signal transmission between the keyboard and computer or other devices. It avoids signal interruptions, delays or pairing problems that may occur with wireless connections, allowing the visually impaired to focus on inputting content without worrying about device connectivity issues.<br>Plug and Play: The USB port offers broad compatibility with virtually all major computer operating systems and devices. Simply plug the keyboard into the USB port and it is ready to use without the need to install additional drivers, which is very convenient and lowers the threshold for the visually impaired to use the device.<br><br>Rugged Quality<br>High-quality materials: The keyboard is made of high-quality materials, with a rugged casing that can withstand a certain degree of impact and wear and tear. The keys are also made of carefully selected materials with good elasticity and durability, so they are not easy to malfunction or be damaged even after prolonged and frequent use.<br>Waterproof and dustproof design: Considering the various situations during use, the keyboard is equipped with a certain degree of waterproof and dustproof function. It can prevent accidental splashing of water or dust from entering the interior of the keyboard and affecting its normal use, prolonging the service life of the keyboard and providing a reliable input device for the visually impaired.