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Keyboard type analysis

Analyze the type of keyboard, you can help you better choose the type of keyboard you need, choose different keyboards according to your specific needs, in order to maximize the keyboard. Here’s a look at the types of common keyboards.

According to the application, the overall classification can be divided into three categories: desktop keyboard, laptop keyboard, and industrial computer keyboard.

Generally, the classification of the desktop keyboard can be classified again according to the number of keystrokes, the working principle of the keys, and the shape of the keyboard.

Classified according to the number of keystrokes

The number of keys on the keyboard has appeared 83, 93, 96, 101, 102, 104, 107, and so on. The 104-key keyboard is based on the 101-key keyboard and adds three shortcut keys two are duplicates for the WINDOWS 9X platform, so it is also called the WINDOWS 9X keyboard. However, there are not many users who are accustomed to using the WINDOWS key in practical applications. In some systems that require a large number of input single digits, there is also a small digital input keyboard, which basically separates the keypad of the standard keyboard to achieve the purpose of reducing the size and cost.

Classified according to the working principle of the buttons

The conventional keyboard has two kinds of mechanical buttons and capacitive buttons, and there is also a keyboard that touches the membrane button in the industrial computer keyboard. The mechanical keyboard is the earliest adopted structure. It is generally similar to the principle of metal contact switch to make the contact open or open. It has the characteristics of simple process, convenient maintenance, general hand feeling, high noise and easy wear. Most cheap machinery The keyboard uses a copper spring as an elastic material. The copper piece is easy to fold and loses its elasticity. The long-term failure rate increases, and it has been basically eliminated. Instead, it is a capacitive keyboard. It is a keyboard based on a capacitive switch. The principle is to change the capacitance between the electrodes by pressing the button to temporarily change the condition that the oscillation pulse is allowed to pass. In theory, the switch is non-contact non-contact type, the wear rate is extremely small or even negligible, and there is no hidden danger of contact failure. It has low noise and easy control of the hand feeling, and can manufacture a high quality keyboard, but the process is mechanical. complex structure. There is also a keyboard for the industrial computer that uses a light touch membrane button for complete sealing, and is only suitable for special occasions.

Classified according to keyboard shape

The shape of the keyboard is divided into a standard keyboard and an ergonomic keyboard. The ergonomic keyboard separates the two left and right hand keypads specified by the fingering on the standard keyboard to form a certain angle, so that the operator does not have to be conscious. The clamping of the arms maintains a more natural form. The keyboard of this design is named by the Microsoft company as the Natural Keyboard. For users who are used to blind typing, the false alarm rate of the left and right hand keys can be effectively reduced, such as letters. “G” and “H”. Some ergonomic keyboards also intentionally increase the area of ??commonly used keys such as the space bar and the enter key. In the lower part of the keyboard, the hand guard is added to support the point before the wrist is suspended to reduce the fatigue caused by the long suspension of the wrist. These can all be regarded as humanized designs.

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