Qwerty keyboard

form and function to a typewriter. The difference is the result of output or appearance. If we use a typewriter, we can not remove or undo anything that has type and every single letter or symbol you type in the result we saw in the paper directly. Not so with the keyboard. What we type in the result or output can be seen on the monitor screen first, then we can modify or make changes to a form of writing, typing and other errors. Like the "mouse", the keyboard is connected to a computer

with a cable found on the keyboard. Cable end is inserted into the port located on the computer CPU.
The keyboard is an input device that is used for typing information into the computer and run a variety of instructions or commands into the computer. The creation was inspired by the creation of a computer keyboard typewriter is the basic design is created by Christopher Latham in 1868 and many are marketed in 1877 by the Remington Company.
The first computer keyboards adapted from punching cards (punch cards) and writing distance delivery technology (Teletype). In 1946 the ENIAC computer using a card reader makers hole (punched card reader) as a means of input and output.
When you hear the word "keyboard" then our minds can not be separated from the existence of a computer, because the keyboard is a board consisting of the keys to type a sentence and other special symbols on the computer. Keyboard in the Indonesian language means the keyboard or keypad.
On the keyboard buttons have the letters A - Z, a - z, numbers 0-9, keys and special characters such as: `~ @ # $% ^ & * () _ - + = <> /,. ? :: "'\ |, And other special buttons that total number was 104 button. While on Typewriter key number is 52 keys. Keyboards generally rectangular shape, but the current model keyboard is very varied. The most famous keyboard is a QWERTY keyboard that has 101 pieces key (button). Most keyboards have a key that is organized into sections as follows: A. Alphanumeric Key B. Numerical Keypad C. Function Key D. Modifier Key E. Cursor Movement Key.
Moreover, in using the application Ms. Office (especially MS. Word), there are some keyboard keys that have a function when combined or combined with other buttons, like the example below: Ctrl + A = Select All Ctrl + B = Bold Ctrl + C = Copy Ctrl + D = Fonts Ctrl + E = Center Alignment Ctrl + F = Find Ctrl + G = Go To Ctrl + H = Replace Ctrl + I = Italic Ctrl + J = Justify Alignment Ctrl + K = Insert Hyperlink Ctrl + L = Left Alignment Ctrl + M = Hanging Indent Ctrl + N = New Ctrl + O = Open Ctrl + P = Print Ctrl + Q = Normal Style Ctrl + R = Right Alignment Ctrl + S = Save / Save As Ctrl + T = Left Indent Ctrl + U = Underline Ctrl + V = Paste Ctrl + W = Close Ctrl + X = Cut Ctrl + Y = Redo Ctrl + Z = Undo Ctrl + 1 = Single Spacing Ctrl + 2 = Double Spacing Ctrl + 5 = 1.5 lines Ctrl + Esc = Start Menu
Physically, the keyboard is divided into 4 parts, namely:

1. PS / 2 Keyboard Usually used on ATX computer and is currently the most widely used. Installation of the keyboard of this type should be carried out carefully, because the port is owned by the same port for the mouse. 

2. Wireless Keyboard As the name implies, this type of keyboard does not use cable as a liaison between the keyboard with the computer. Type of connection used is infra red, wifi or bluetooth. To connect the keyboard to the computer, it takes a radio transmitter and receiver. Transmitter unit is usually found on the keyboard itself, while the receiver is usually installed on a USB or serial port on the CPU. 

3. USB Keyboard Latest Computers are now widely that use USB connector type which ensures faster data transfer 

4. Serial KeyboardUsing the DIN 5 male and is usually used on the AT type computer