As the most commonly used input device of the computer, the importance of the computer keyboard is self-evident. Today, the editor will share the basic knowledge of the keyboard and the schematic diagram of the keyboard made by the author for you. Many novice friends may encounter such a situation. They are cleaning the keyboard or a key on the keyboard is lost, but they don't know how to install it back, and there is no other keyboard to refer to, So sometimes the keyboard sketch is very helpful for novice friends.
Schematic diagram of computer keyboard
Now let's take a look at the summary of computer keyboard knowledge — I hope it will be helpful for novice friends to understand keyboard in detail.
The keyboard is one of the input devices of the computer. When we had computer classes in school, we had a lot of trouble to adapt to the strange arrangement of letter keys. Although the usage rate of the mouse is relatively high, a large number of basic operations still rely on the keyboard to complete. When many users choose the keyboard, they often just knock the key position casually, and they focus on the mouse. In fact, the selection of keyboard is no less than that of mouse, especially for users who often perform word processing.
The secret of ease
Most of the current keyboard sales only advertise how fashionable it looks and how many shortcut keys it has. There is no denying that the beautiful keyboard is very attractive, but the real good keyboard is based on the best feel. Hand feeling refers to the feeling of fingers and wrists when users use the keyboard. If the key cap is hard to press, or the wrist is suspended for a long time, you will feel uncomfortable.
In fact, what we want is a keyboard with an ergonomic structure that is not too fancy. I believe many users have heard of the word "ergonomics", and have seen the keyboard with arc-shaped key arrangement, with an included angle in the middle of the letter keyboard. When we use the keyboard, our forearms will naturally separate at a certain angle. The common keyboard structure requires that the hands be parallel when tapping the keyboard, which is easy to cause muscle strain. The ergonomic keyboard makes the operator's palm and forearm axis naturally in a straight line, which is not easy to cause muscle strain. Although this design is very helpful to users who use keyboards for a long time, this change cannot be accepted by everyone because their operation habits have been fixed by the key position arrangement of ordinary keyboards.
Now the keyboards sold in the market have begun to improve the user's operating comfort. These products mainly include increasing (shortening) the key range, increasing the number of shortcut keys (usually not customizable), changing the front and back height of the keyboard to meet the user's operating habits, and adding a "tray" to hold the wrist.
Tips: The key stroke is the displacement length from the normal state of the key to the finger press. The key stroke of a standard desktop keyboard is 3.8mm ～ 4.0mm.
Among the methods mentioned above to improve the operating comfort, adding shortcut keys and trays can be seen by users when opening the product package. The keyboard height matching with the tray can alleviate users' fatigue to a certain extent, while the key range requires users to experience when trying it out. When users hit keys, when they encounter a keyboard with a very short key range (an ultra-thin keyboard similar to a laptop keyboard, its key range is only 2.5mm-3mm), they first feel that they do not need to use their fingers too hard, and they can complete the input by pressing it slightly; For a keyboard with a long key range, the fingers need to be forced. The keyboard of which key range is required is completely determined by the user's usage habits, that is, the feel. However, after pressing the key, it cannot be restored to the original position quickly, that is, the product with insufficient resilience of the key position will increase the fatigue level of the user.
Little knowledge: Resilience refers to the damping of the keycap during keystroke, which is reflected in the user's feeling that the keys on the keyboard come back slowly. The resilience is closely related to the key path, and different key paths have resilience suitable for it. If the resilience is too strong, the keystroke force will increase; If the resilience is too weak, you will feel loose when you hit the key. Resilience and key stroke design are reasonable, which can be used in large
To some extent, it can make up for the lack of touch caused by the short key range of the keyboard.
Ergonomic keyboard, skillfully using combination keys to improve work efficiency。 The function of the keyboard is to input. Users can input the letters they need into the system and display them on the computer screen. In fact, the keyboard is not just a text input tool. In some special occasions, the use of keyboard combination keys is often more prominent than the mouse. Now let's introduce some combination keys, which can improve work efficiency.
Quickly start the program with the key combination
There are many ways to open applications on the computer desktop. For example, you can double-click to open them, or click with the mouse first, and then open them with the Enter key on the keyboard. If you want to go back to nature and experience the age without a mouse, you can also use the Tab key to switch to the corresponding program, and then use the Enter key to open it. Of course, you can also override all ordinary ways to set shortcut keys for desktop applications. For example, to set a shortcut key for QQ applications, right-click the QQ icon on the desktop, select Properties, type the shortcut key you want to set in Shortcut, and then click Application. It should be noted that when some keys that are prone to conflict, such as number keys, are set as shortcut keys, the system will automatically set the shortcut keys as "Ctrl+Alt+Number Keys".
The combination key helps you to take a smart screenshot
The "PrtScr" key is a key to capture screen graphics, which is a shortcut that many users will use at ordinary times. However, it captures the current image displayed on the entire display. If I only need a screenshot in a window, why not capture it first, and then capture the image in "Drawing"? Don't bother. Use the "Alt+PrtScr" key combination to capture only the image of the currently active window. In daily use, the keyboard will not only affect the character workers, but also the game players' games.