Post Terdepan: The types of keyboards

The keyboard is an input device that is used to type information into a computer and run a variety of instructions or commands into a computer. The creation was inspired by the creation of a computer keyboard typewriter that basic design created by Christopher Latham in 1868 and marketed in 1877 by the Remington Company. The total number of keys on the keyboard there are 104 tombol.Keyboard have the same form and function with a typewriter.

The first computer keyboard adapted from the pit cards (punch cards), and writing long-distance delivery technologies (Teletype). 1946 ENIAC computer using a card reader makers holes (punched card reader) as input and output devices.

When you hear the word "keyboard" then the mind can not be separated from the existence of a computer, because the keyboard is a board consisting of the buttons to type in sentences and other special symbols on the computer. Keyboard in Indonesian means keyboard or keypad.

On the keyboard there are buttons letters A - Z, a - z, numbers 0-9, and special characters such as keys : `~ @ # $% ^ & * () _ - + = <> /,. ? :; "'\ | As well as other special buttons that total number is 104 buttons. While the machine is type in the number buttons 52 buttons. Bentukkeyboard generally rectangular, but the current model of the keyboard is very varied. The most famous keyboard is QWERTY keyboard that has 101 pieces of key (key). Most keyboards have keys that are arranged into the following sections:

A. Alphanumeric Key
B. Numeric Keypad
C. Function Key
D. Modifier Key
E. Cursor Movement Key.

Physically, the keyboard is divided into four types, namely:

1. Serial Keyboard

serial

Using DIN 5 of male and usually used on AT type computer.

2. Keyboard PS / 2

PS / 2

Usually used on a computer ATX and is currently the most widely used. Installation of the keyboard of this type should be carried out carefully, because the port is held together with a port for the mouse.

3. Wireless Keyboard

wireless

As the name implies, this type does not use the keyboard as a liaison between the keyboard cable to the computer. This type of connection used is infra-red, wifi or bluetooth. To connect the keyboard to the computer, it takes the transmitter and receiver units. Unit transmitter is usually found on the keyboard itself, while the receiver is usually mounted on a USB or serial port on the CPU.

4. USB Keyboard

USB connector

Latest computers now use many types konektorUSB which guarantees faster data transfer

In shape and buttons, the keyboard is divided into seven types, namely:

1. QWERTY Keyboard

QWERTY Keyboard

The QWERTY keyboard layout found by Scholes, Glidden and Soule in 1878, and later became a standard commercial typewriter in 1905. QWERTY taken dari6 letter sequence in the second row of the alphanumeric keys. The QWERTY keyboard is designed such that the most commonly pressed keys located as far apart as possible, so to minimize the congestion at the time of typing (on a typewriter mechanic). Although the QWERTY layout is very widely used, but it has some weaknesses and inefficiencies. For example, 48 percent of the movement between successive letters have to do with a hand. Only 32 percent of beats done on the home row (row beginning from the position of the fingers on the keyboard). Greater burden left hand from the right hand (56 percent). The most obvious example of the inefficiency of the QWERTY layout is typing the letter 'a' is quite often used, but it must be done by the little finger is the weakest.

2.Keyboard Dvorak

Keyboard Dvorak

Dvorak Keyboard (1932), in which the arrangement of the letters are arranged such that the right hand burdened with more work than with the left hand. In addition, the Dvorak layout was designed so that 70 percent of the beats fall on the home row, which can reduce fatigue due to typing (more ergonomic). A number of experiments show that the Dvorak layout 10-15 percent more efficient than the QWERTY layout.

3.Keyboard KLOCKENBERG

Keyboard KLOCKENBERG

This keyboard is made with the intent enhance existing keyboard types, namely by separating the two halves of the keyboard (left and right). The left and right of the keyboard are separated by an angle of 15 degrees and sloped downward. In addition, the keyboard KLOCKENBERG have buttons made closer (thin) with a work table so it feels more comfortable. This layout, in addition to reducing the load on the muscles of the wrist and fingers are also designed to reduce the burden on the hand and shoulder muscles. Separation of the left and right making it relatively more space consuming.

4. Keyboard Maltron

Keyboard Maltron

Unlike the generally flat keyboard, this keyboard is made slightly concave inward. Considering that at the time the fingers are positioned to be typed, then the radius is guaranteed not to form a straight line. Manufacturers Maltron believes that basically, only used eight of the ten fingers available when a human finger typing with the keyboard typing on a regular keyboard always.With, the fingers have to adapt to the shape of the keyboard. It is claimed by them can cause RSI (Repetitive Stress Injuries). Meanwhile, by using Maltron, keyboardnyalah which will adjust by hand. With a unique shape like this, Maltron ensure comfort when typing fingers so as not to cause RSI can even be so because the increase typing speed used is 10 instead of 8 finger fingers.

5. Keyboard Chord

Keyboard Chord

Only have a few buttons from 4 to 5. To enter a letter have to press multiple keys simultaneously. The size is compact, it is suitable for portable applications. Short training time, Tombo-key emphasis reflects the desired shape speed is high but less popular, due to the long service will cause fatigue in hand. Here are the types of keyboard chord:
keyboard Palantype

Palantype layout has three groups of characters. The group on the left shows the initial consonant sebuuah words, the middle shows the vocal group and the right side shows the group the last consonant of a word or image kata.Pada rate seen that not all consonants are there, they will consonants can be presented using a combination of multiple buttons
keyboard stenotype

keyboard stenotype

Shorthand is a type of short writing that is often used to record the greeting. This type of writing most widely used by journalists to record interviews with faster results. Stenotype keyboards have advantages similar to the keyboard Palantype.

6. Keyboard Alphabetik

Keyboard Alphabetik

The buttons on the keyboard alphabetik arranged exactly as the QWERTY or Dvorak layout, but as a sequential arrangement of the letters in alphabetical order. Keyboard alphabetik also can not compete with the popularity of the QWERTY layout, but is usually found in many children's toys, so children were taught to know the alphabet letters. For users who are not typists, perhaps the layout is quite helpful. However, from the test results, the use of layout like this would slow down the speed of typing.

7. Keyboard Numeric