8/31/2023 0 Comments Old type keyboard![]() ![]() Symbol 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.
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