10/2/2023 0 Comments Old type keyboardSymbol keys/notation keys: the symbol keys have two symbols on them. When you hold down the shift key and press the number, the upper symbol labelled on the key appears. When any of these keys are pressed, the number appears on the screen. Number keys: The number keys (0-9) work like those on a typewriter. Spacebar key: The spacebar key adds a blank space between characters. When the keys are pressed while holding down the shift key, the upper-case letter are produced. When the letter keys are pressed alone, the lower case type appear on the screen. Letter keys: The letter keys (A-Z) work like the typewriter. The various keys in the alphanumeric keys are: Alphanumeric keys: These are used for typing letters, numbers and notations into the computer. Num lock key: it is used to turn the num lock mode ON and OFF.Įnter key: The enter key of the numeric pad function the same ways as the enter key of the typing area.Ģ. The various keys in the numeric keypad are: Numeric keys: It is used to enter numbers. PARTS OF THE COMPUTER KEYBOARD AND THEIR USESġ. State three classification of computer keyboardĭifferentiate between corded and cordless keyboard USB keyboard (universal serial bus): This is a keyboard with a USB port attachment and it does not require restarting the computer before the selection of the keyboard.Serial keyboard: It has a serial port attachment which requires restarting the keyboard before the keyboard can be detected.It requires restarting the computer before detection of the keyboard. PS/2 Keyboard: It has a PS 2 pin attachment.It uses a remote sensor to send signals to the system unit.ĬLASSIFICATION BASED ON THE PORT OF CONNECTIONNOF KEYBOARD’S CORD ĬLASSIFICATION BASED ON THE POINT OF CONNECTION OF THE KEYBOARD TO SYSTEM UNITĬorded keyboard: This is a keyboard with a cord attached to the system unit.Ĭordless keyboard: This is a keyboard with no cord attached to the system unit. Super-enhanced keyboard: It has numerous function keys and more additional special keys.e.g.It has twelve function keys and more special keys. Enhanced keyboard: It has more keys than the ordinary keyboard.Ordinary keyboard: This is the old type of keyboard with just about ten function keys and very limited special keys.The new standard keyboard has 53keys and offer many advance over QWERTY and DVORAK designs. Standard keyboard: It is designed with the QWERTY model.The port of connection of the keyboard’s cord.ĬLASSIFICATION BASED ON THE TYPES OF KEYS ON THE KEYBOARD The point of connection of the keyboard to the system unit. Keyboards can be classified in three ways. Examples are num lock which turns on the calculator keys and caps lock which is used for turning on the letter keys to upper case. Toggle keys are keys that are turned on/off by pressing the same key. Special keys: These keys include the other keys such as print screen, pause or break, window, power, alt, ctrl, tab, shift, scroll lock ,insert ,num lock, caps lock and toggle keys. They could be ten (F1-F10), twelve (F1-F12) or fifteen (F1-F15) depending on the type of keyboard.ĥ. Function keys: These keys are command keys. They include insert, del, home, end, page up, page down and the arrow keys (right, left, up and down arrow keys).Ĥ. The Cursor-control keys: These keys control the position of the cursor on the screen. They are used for typing letters, numbers and notations into the computer.ģ. Alphanumeric keys: These keys are located at the central part of the keyboard. They are located on the right-hand side of the keyboard.Ģ. Numeric keys (calculator keys): These are activated by pressing the Num lock key.
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