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[Discussion] [Device Tech Bytes #22] Different Types of Computer Keyboards Explored!

2020-10-27 11:46:34
1720 53
Greetings Everyone

          Welcome to Device Tech Bytes 22th Vol! In the previous Tech Byte topic, we have learned All About WiMAX Technology! By Arun. In today topic let's discuss keyboard mechanisms. Have you guys never thought about computer keyboard mechanisms? like how many types of keyboard mechanisms are there and how they work?

         The concept of pressing keys to enter text has been around for centuries. One of the early models of what later became known as a typewriter was created by Pellegrino Turri, who invented a mechanical typing machine for his blind lover so that she could write him letters- or so the story goes. But these typing machines didn’t always have the flat tablet-like structures they have today. The typewriters of old looked more like sewing machines than typing devices. In fact, they would be mounted on sewing machine tables and used with treadles.

Where it started
          The QWERTY layout is attributed to an American inventor named Christopher Latham Sholes, and it made its debut in its earliest form on July 1, 1874 -- 142 years ago today. Sholes had been for some years developing the typewriter, filing a patent application in October 1867. However, the original key layout, with the second half of the alphabet in order on the top row and the first half in order on the bottom row, led to some problems. The keys were mounted on metal arms, which would jam if the keys were pressed in too rapid succession.

          Fast forward to 2019, and computer keyboards are a whole different animal. They have transformed from the teletype machines to a range of sophisticated input devices that almost all of us have quite literally at our fingertips. In this article, we’ll explore all the different kinds of keyboards, and whom they are best for.
Types of keyboard mechanisms
Membrane Keyboards:

          A membrane keyboard is one whereby the keys are cushioned with rubber or silicone shell. These keys are very sensitive to the pressure applied to them. Due to its design, a membrane keyboard is relatively quiet even when you’re typing at a high speed. This keyboard consists of three key layers- a top membrane layer, an inner middle layer and a bottom membrane layer. Under these layers are conductive traces that activate the command when you press a certain key.
          Membrane keyboards have risen to become the king of keyboards due to their affordability. You can find a quiet and responsive membrane keyboard for less than $20. If you were to purchase a mechanical keyboard, even an entry level model will cost you many times that. On the downside, using this type of keyboard might compromise your typing accuracy. At times, the keys are not registered as a hit because you didn’t press down all the way.

Mechanical Keyboards:

          A mechanical keyboard works in a fairly similar manner. It also resists keystrokes, which means the keys return to their initial positions once a user removes their finger. But instead of using a rubber membrane, mechanical keyboards use springs. Springs result in smoother and more linear keystrokes. They also stimulate a quicker return to keys’ original positions. You only need to press the keys halfway for keystrokes to register. This particular feature makes mechanical keyboards superior because it results in fast typing speed.

          What other benefits do mechanical keyboards offer? They are durable. The durability of a keyboard is, to a great extent, defined by the number of key presses it can withstand. A conventional keyboard can only withstand 10 million key presses while a mechanical keyboard can withstand more than 50 million key presses. Unfortunately, mechanical keyboards produce more noise during use, though certain types of key switches that are quieter than others.

In general mechanical keyboards are a better choice ergonomically than membrane keyboards, especially for heavy typists and gamers who need low resistant, ultra responsive keys.

Ergonomic Keyboards:

          Ergonomic keyboards aren’t really a type of computer keyboards on their own, but rather refers to any keyboard that is designed to minimize strain on your body. Keyboards that are poorly designed not only slow your typing, but can lead to RSI (repetitive strain injuries) overtime, such as carpal tunnel syndrome.

          By definition, anything described as ergonomic means that it’s optimized for the human body. This holds true for ergonomic keyboards, which are generally considered more comfortable. They also cause less stress on your hands, fingers, and wrists.

Ergonomic keyboards come in two main designs:

  • Contoured keyboard: this keyboard features a gently-raised shape that encourages a natural position of your hands and wrists as you type. A good example of a contoured keyboard is the Jestik Kinesis KB600.

  • Split keyboard: as its name suggests, this is a keyboard whose keys are separated into two or three groups. The purpose of splitting the keys in this manner is to enable you to type at a more neutral posture, such as a “v” open shoulders position.

          There exist both regular and mechanical keyboards that are ergonomic, for people who often feel strained or fatigued at the end of a long typing session.

Left Handed Keyboards:
Left-handed keyboards are membrane or mechanical keyboards with the numbers pad placed on the left instead of right side of the keyboard. These types of keyboards can be more ergonomic than normal keyboards for the following people


  • People with a dominate left hand.
  • People with right shoulder or arm pain. A left-handed keyboard brings the mouse closer to shoulder width on the right side when operating, reducing the chances of overreaching for the mouse.
  • People with an injured right hand that do a lot of 10-key data entry.

Gaming Keyboards:

          If you like playing games on your PC, you could invest in an ordinary office keyboard and call it a day. But if you really want to take your gaming to the next level, a gaming keyboard can be highly conducive. These keyboards are specifically engineered to improve your gaming experience and victories


Most decent gaming keyboards consist of the following unique features that separate them from the “normal” ones:

  • Key Rollover: this is the component that determines the number of key presses that a keyboard can register. Conventional keyboards have 1 or 2 key rollovers. So, if you press more than one time, the additional keystrokes don’t register. A gaming keyboard is designed with a minimum of 5-Key Rollover. This lets you make simultaneous keystrokes with ease.

  • Macro functions: Most gaming keyboards are designed in such a way that users can reprogram the functions of keys. By reprogramming, you are able to perform multiple functions with just a single tap.

  • Programmable backlit keys: For whatever reasons, gamers love lights, and gaming keyboards certainly bring them to their products. Most of them come with keys that aren’t only LED-backlit, but can be programmed with millions are color combinations. Gaming in the dark is a whole new experience thanks to gaming keyboards.

          For serious gamers, look for a mechanical gaming keyboard that is low force and supports more than a 5-key rollover for nanosecond responsiveness.

Wireless Keyboards:

          Wireless technology has taken the world by storm: Wireless speakers, wireless security cameras, and of course, wireless keyboards. The main benefits of using a wireless keyboard are that they help to reduce clutter, plus allow you to control your device from a distance. For devices such as the TV that maybe a few feet away from where you are sitting, wireless keyboards are as much of a convenience as the remote control. The two main technologies powering wireless keyboards in the market today are.

  • Bluetooth: This is the most popular method of syncing your wireless keyboard to your computer. It works with a range of devices that support bluetooth, from tablets, some smartphones, to your TV. On the flip side, they aren’t as hassle free to connect as RF keyboards.

  • Radio-frequency (RF): RF keyboards utilize a broadcast technique similar to the Wi-Fi standards to create a wireless connection to your computer. Most keyboards that come with a dongle you insert in the USB port to pair your wireless keyboard with uses 2.4 ghz RF technology. Setting up the connection is painless, though with the dongle RF wireless keyboards are much more limited in the types of devices it works with.

The downside of wireless keyboards is that they need to be recharged periodically, though modern wireless keyboards can usually go for months, if not years, between a battery swap.

Projection Keyboards:

          Imagine being able to use any flat surface to type on. For devices that don’t come with a built in physical keyboard, such as your phone or tablet, this could be a godsend. We’re talking about an optical virtual keyboard, or as it’s popularly known, a projection keyboard.

          Invented by IBM engineers, this is one of the more recent innovations in keyboard technology. In general, the projection keyboard uses lasers to displays a visible virtual keyboard onto a surface. When a user selects keys on the virtual keyboard, optical sensors or camera picks up these finger movements, which are then translated into actions and characters by computer software.

          A highly rated projection keyboard is the Serafim Keybo, which can project a regular keyboard or piano keyboard virtually onto a flat surface. It also doubles as a smartphone stand and charger.

Wooden Keyboards:

          When it comes to wacky designs, wooden keyboards inhabit a realm of their own. Believe it or not, there are some keyboards made mostly from wood. The TrioGato and TechSmart Keyboards are good examples. They are handcrafted from bamboo and are wireless. In terms of functionality, a wooden keyboard works like an ordinary keyboard, as the internals still consists of the same circuitry and technology as regular keyboards.

          Wooden keyboards are the best option for eco-conscious individuals, or as a novel input device in your living room. Unlike plastic keyboards, these ones are made of wood, which is a biodegradable material. What’s more, wooden keyboards made of bamboo are extremely resilient. Bamboo is one of the most common materials used in construction, primarily because of its strong composition. The TrioGato wooden keyboard for example is rated for 50 million key presses, compared to 10 million for an average membrane keyboard.

If you spend most of your time behind a desk, choosing a good keyboard is nothing short of vital. This is the device you use to communicate with the world, complete work, and search for entertainment. There are tons of keyboards to choose from; ergonomic, projection, mechanical, membrane, handheld, wooden and even vertical keyboards. Before picking a particular keyboard, assess its pros and cons and determine whether it meets your needs.

Source
ergonomictrends, wikipedia, google

Previous Tech Bytes
[Device Tech Bytes] [#1] by --cherri
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[Device Tech Bytes] [#21] by --Arun Abhimanyu

Credits
Thanks to the admins and moderators for this great opportunity
hope I will come up with good content again in my next topic

Signing off
@Cherri

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2020-10-27 11:46:34
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Device Team

Arun Abhimanyu | from Redmi Note 7 Pro

#1

nice and detailed thread 👏👏👏
2020-10-27 13:14:12

Photography Team

Addy Chowdary | from Redmi Note 8 Pro

#2

nice explanation and keep going on brother!
2020-10-27 16:01:39


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myrichgoh | from Mi 10 Pro

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Thanks for sharing...
2020-10-27 17:13:25

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Thanks for sharing
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Thanks for sharing!
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Amazing Content
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thanks for the information
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thanks for amazing content)
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thanks for sharing, great information
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