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THE KEYBOARD AND TYPES OF KEYBOARD

CONTROL KEYS:they are used in line with other keys to instruct the computer to perform specific tasks. They are ctrl, del Esc and Alt.

CURSOR- CONTROL  KEYS: otherwise known as curdor manipulations keys allow the user to move the cursor to the left, right, up one line and down one line.

APPLICATION (TASK MENU): This perform the same function as right clicking the mouse.

CTRL: This ia sometimes used in conjuction with one or two other keys to give command to the computer e.g. ctrl s, ctrl

DEL: Stand for Delete, it is used to cancel the character to the right of the cursor and it can be used to delete selected text or object.

WINDOWS LOGO KEYS: They are used to activate the start menu from which programs can be launched.

ALT: This key can be used in combination with other keys e.g. ALT + F4

HOME: Moves the cursor to the beginning of a line.

END: Moves the cursor to the end of a line or screen display.

PAGE UP: Moves the page on the screen.

PAGE DOWN: Moves the page down on the screen

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PRINT SCREEN: Copies the entire content of a computer screen of the clipboard.

TAP KEY:The key is marked with double arrows facing opposite directions. It shiftthe cursor eight spaces to the right at each press.

THE SPACE BAR: This is the longest key and it is used for producing spaces.

SHIFT KEY: It is used to enter both upper and lower case characters.

ENTER/ RETURN KEY: They enter or return key moves the cursor down.

BACK SPACE KEY: This key deletes the character to the left.

CAPS LOCK KEY: It is a toggle key that needs to be depressed in order to get out of capitalization.

DIRECTION KEYS: To move the cursor right, left, up, down without deleting any characters.

 

EVALUATION

  1. Explain the function of the following keyboard section keys (a) Print screen (b) shift key  (c) home key   (d) alt  (e) space bar key
  1. Explain task menu.

 

FEATURES OF KEYBOARD

  1. Rollover Capability: The keyboard has rollover capability i. e several keys can be pressed almost simultaneously and they will be registered in sequence.
  2. Auto-Repeat Capability: Most of the keys on the keyboard have auto-repeat capability. When a key with this feature is held down, it will repeat until it is release or another key is pressed.

 

Uses of keyboard

  1. It is used to enter text, number and punctuation mark.
  2. It can be used to shut down the computer system in the absence of the mouse.
  3. CTRL + ALT + DEL can be used to restart computer during warm booting.
See also  Computer Input Devices

 

GENERAL EVALUATION

  1. Explain the two features of keyboard.
  2. Mention three uses of the keyboard.

 

WEEKEND ASSIGNMENT

  1. The ……… key is the longest key and it is used for producing spaces.(a) delete(b) space bar (c) home (d) print
  2. The ……… is used to enter both upper and lower case characters.(a) End key (b) ctrl key  (c) shift key (d) page up
  3. To enter or return key moves the cursor down use ……… key (a) enter (b) home (c) left arrow (d) shift
  4. . …. key deletes the character to the left.(a) back space (b) shift (c) home (d) Alt
  5. The keyboard features where several keys can be pressed almost simultaneously and they will be registered in sequence is called(a)page down (b) Auto repeat (c) Rollover Capability (d) Ctrl +Alt Del

 

THEORY

  1. Explain the function of the following keyboard section keys (a) Print screen  (b) shift key  (c) home key   (d) alt  (e) space bar key
  1. Explain the following features of the keyboard (a) Rollover Capability    (b) Auto Repeat Capability.

 

See also

THE KEYBOARD AND TYPES OF KEYBOARD

FEATURES OF A COMPUTER

COMPUTER PROCESSING MODES

DATA PROCESSING

WORD PROCESSING PACKAGES

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