IBM ThinkPad Butterfly Keyboard

IBM ThinkPad Butterfly keyboard

The TrackWrite, also known as the butterfly keyboard, is a foldout laptop computer keyboard designed by John Karidis for IBM as part of the ThinkPad 701 series, released in 1995. It allowed the 701 series to be both compact (when closed) and comfortable to use (when open), despite being just 24.6 cm (9.7 in) wide with a 26.4 cm (10.4 in) VGA LCD. The 701 was the top selling laptop of 1995; however, as later laptop models featured progressively larger screens, the need for a folding keyboard was eliminated. Consequently, no model but the 701 used the butterfly keyboard. The butterfly keyboard is split into two roughly triangular pieces that slide as the laptop's lid is opened or closed. As the lid is opened both pieces slide out to the sides, followed by one piece sliding downward. The two halves mesh to form a keyboard 29.2 cm (11.5 in) wide which overhangs the sides of the laptop body. Conversely, as the lid is closed one piece slides back, then both slide inward until the keyboard can be covered by the lid. The movement of the keyboard is driven by a cam on the lid's hinge, so the motions of the keyboard parts are always synchronized with the movement of the lid. The unusual design is being displayed in the design collection of the Museum of Modern Art in Manhattan, New York and Die Neue Sammlung.

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Do you find an actual physical keyboard for your computer is easier than the keyboard already built into the computer itself like on a tablet?

Yes. I do not look at the keyboard while I type, so I would slow down tremendously if I was unable to feel the keys. It would be difficult to tell where they are

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What's the best way to clean a keyboard?

take a cloth and spray a bit of windex on it and wipe away, do not spray it directly at the keyboard as it may ruin it

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How can i clean my Macbook keyboard?

use a bottle of compressed air and a straw(comes with the can) to blow out the junk in between the keyboard. The straw will be pretty thin so you can probably use that

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if you have a dell laptop, how do you clean under the keyboard?

pull the keyboard completely out of your laptop and unhook the connector that connects it to the laptop (there should be one cable). Then, rinse the keyboard out completely using just a running faucet and let it air dry for about three days. Next, reconnect it and you should be set.

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Math keyboard: does it exist ? [closed]

One almost existed. The program I use to write TeX has several "keyboards". For example, typing Ctrl-g switches to the Greek "keyboard" and then "a" puts "alpha" in your file; typing Ctrl-s and then "a" puts "angle" in your file. At one time, the owners of the program were planning to produce a keyboard with the property that the symbol on the keyboard would change when you switched keyboards. So when you typed Ctrl-g, you would see $alpha$ on the "a" key (I think they were planning to use LEDs). It was certainly an interesting idea, but, no, I would not buy such a thing --- like most people here, I touch-type, and prefer to enter everything with a sequence of normal characters

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Intermittent input delay on keyboard (MacBook Pro 2018)

Yes, the keyboard lag exists, you are not imagining things ... nor are you the first to notice this behaviour. This fluctuating-delay happens because there's a T2 chip in the way, and the keyboard and trackpad are processed by the T2's own BridgeOS first before reaching the rest of the system that macOS can see and have influence over. Oh, and before you ask, using a Bluetooth keyboard is not going to be faster. Sadly, until Apple actually acknowledge this additional annoyance caused by the T2, nothing will be done about it

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German keyboard layout

The German keyboard layout is a QWERTZ keyboard layout commonly used in Austria and Germany. It is based on one defined in a former edition (October 1988) of the German standard DIN 2137-2. The current edition DIN 2137-1:2012-06 standardizes it as the first (basic) one of three layouts, calling it "T1" (Tastaturbelegung 1, "keyboard layout 1"). The German layout differs from the English (US and UK) layouts in four major ways: The positions of the "Z" and "Y" keys are switched. In English, the letter "y" is very common and the letter "z" is relatively rare, whereas in German the letter "z" is very common and the letter "y" is very uncommon. The German layout places "z" in a position where it can be struck by the index finger, rather than by the weaker little finger. Part of the keyboard is adapted to include umlauted vowels (, , ) and the sharp s (). (Some newer types of German keyboards offer the fixed assignment AltH for its capitalized version.) Some of special key inscriptions are changed to a graphical symbol (e.g. Caps Lock is an upward arrow, Backspace a leftward arrow). Most of the other abbreviations are replaced by German abbreviations (thus e.g. "Ctrl" is translated to its German equivalent "Strg", for Steuerung). "Esc" remains as such. (See: "Key labels" below) Like many other non-American keyboards, German keyboards change the right Alt key into an Alt Gr key to access a third level of key assignments. This is necessary because the umlauts and some other special characters leave no room to have all the special symbols of ASCII, needed by programmers among others, available on the first or second (shifted) levels without unduly increasing the size of the keyboard.