Computer keyboard

COMPUTER KEYBOARD

Prepared by: Cheneta Kenny Pasaje Calvo

Keyboard

A keyboard is an input device that contains keys users press to enter data and instructions into a computer

Christopher Latham Sholes was the inventor of the keyboard for computing devices.

He patented the typewriter that we commonly use today in 1868.

Types of Keyboard

Standard Keyboard

• also known as the Desktop Keyboard• include alphabetic characters,

punctuation symbols, numbers and a variety of function keys.

Standard Keyboard

Laptop Keyboards

• has the same keyboard type as a normal keyboard, except for the fact that most laptop keyboards condense the symbols into fewer buttons to accommodate less space.

Laptop Keyboards

Gaming Keyboards

• are similar to normal keyboards except they generally contain extra features such as illuminated keys, multimedia keys, an additional LCD screen, palm rest and other features.

Gaming Keyboards

Ergonomic Keyboards

• is a computer keyboard designed with ergonomic considerations to minimize the chance of wrist and hand injuries.

Ergonomic Keyboards

Laser or Infrared Keyboards

• this device projects the keyboard on to a flat surface, such as a table or desk.

Laser or Infrared Keyboards

Rollup Keyboards

• are made of soft plastic or silicone which can be rolled on itself for travel.

Rollup Keyboards

Connection Type

A. Wired Keyboards

• PS/2• USB

B. Wireless Keyboards

• Bluetooth• Infrared (IR)• Radio Frequency

Bluetooth Keyboard

Virtual Keyboard (uses an infrared and laser technology

RF Wireless Keyboard

Parts of the Computer Keyboard

• Function KeysAcross the top of a keyboard are a row of

keys called the Function Keys. Each key is composed of the letter F and a number, ranging from F1 to F12. Each of the Function Keys performs a specific operation based upon what software is being used.

• Numeric KeypadMany larger keyboards have an extra

section to the right that contains the Numeric Keypad. This consists of the numbers 1 through 9, an asterisk, a slash, a dash, a plus sign, an enter key and a period. There is also is a "Num Lock" key, which is used to turn on and off the Numeric Keypad.

• Navigation KeysThe Navigation Keys, also called the

Direction Keys, are used to navigate through documents and websites. Examples of Navigation Keys are the up, down, left and right arrows.

• Typewriter KeysThe center of the keyboard, which contains

the largest amount of keys, includes letters and numbers. Most typing is done with these keys.

• Special KeysOther keys include the Alt and Ctrl keys

(used for specific functions), the Tab key (used to insert the cursor) and the Shift key (used to make capital letters or symbols that are located on the number keys).

• EscapeThe Escape key is located in the upper left-

hand corner of the keyboard. It is used to cancel operations.