Input devices

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  • 1. INPUTINPUT DEVICESDEVICES FUNDAMENTAL PARTS OFFUNDAMENTAL PARTS OF THE COMPUTERTHE COMPUTER
  • 2. INPUT DEVICESINPUT DEVICES  IS ANY PERIPHERALIS ANY PERIPHERAL APPLIANCEAPPLIANCE THATTHAT GENERATES INPUTGENERATES INPUT FOR THEFOR THE COMPUTER ANDCOMPUTER AND ALLOWS USERS TOALLOWS USERS TO ENTERENTER INFORMATION INTOINFORMATION INTO THE COMPUTER.THE COMPUTER.
  • 3. KEYBOARDKEYBOARD  THE SET OF TYPEWRITERTHE SET OF TYPEWRITER LIKES KEYS THATLIKES KEYS THAT ENABLES YOU TO ENTERENABLES YOU TO ENTER DATA INTO A COMPUTER.DATA INTO A COMPUTER. IT IS SIMILAR TOIT IS SIMILAR TO ELECTRIC TYPEWRITERELECTRIC TYPEWRITER KEYBOARDS BUTKEYBOARDS BUT CONTAIN ADDITIONALCONTAIN ADDITIONAL KEYS.KEYS.
  • 4. PARTS OF THE KEYBOARDPARTS OF THE KEYBOARD  Alphanumeric keys-Alphanumeric keys- letters and numbers.letters and numbers.  Punctuation keys-Punctuation keys- comma, period,comma, period, semicolon, and so on.semicolon, and so on.
  • 5.  SPECIAL KEYS-SPECIAL KEYS- functionfunction keys, control keys, arrowkeys, control keys, arrow keys, Caps Lockkeys, Caps Lock keykey etc.etc.
  • 6. LAY-OUTLAY-OUT  QWERTYQWERTY-- the standardthe standard lay-out of letters, numbers,lay-out of letters, numbers, and punctuation of theand punctuation of the keyboard.keyboard.  DVORAKDVORAK- another keyboard- another keyboard design, which has letterdesign, which has letter positioned for speed typing.positioned for speed typing.
  • 7. SPECIAL KEYSSPECIAL KEYS  Control KeyControl Key and Alternateand Alternate Key- holding down whileKey- holding down while pressing another characterpressing another character to perform commandto perform command depending on the programdepending on the program running.running.  Arrow Keys-Arrow Keys- for moving thefor moving the cursor or insertion pointcursor or insertion point right, left, up, and down.right, left, up, and down.
  • 8.  Shift Key-Shift Key- a key causesa key causes the system to output athe system to output a capital letter.capital letter.  Function Keys-Function Keys- specialspecial keys that have differentkeys that have different meanings depending onmeanings depending on the program running.the program running. Range or labeled fromRange or labeled from F1-F10 or 12 or 15.F1-F10 or 12 or 15.  Caps Lock-Caps Lock- whenwhen activated, causes allactivated, causes all subsequent letters to besubsequent letters to be uppercase.uppercase.
  • 9.  Escape Key-Escape Key- use to gouse to go cancel a command or gocancel a command or go back to previous screen.back to previous screen.  Space Bar-Space Bar- use to enteruse to enter space rather than aspace rather than a character.character.  Enter Key-Enter Key- use to enteruse to enter or execute a command.or execute a command.  Backspace key-Backspace key- deletes characters to the left of the cursor
  • 10.  Other Keys-Other Keys- Tab key,Tab key, Insert Key, Delete Key,Insert Key, Delete Key, Home/End, Page Up/Down,Home/End, Page Up/Down, Scroll Lock, Num LockScroll Lock, Num Lock
  • 11. MOUSEMOUSE  Invented by Douglas Engelbert inInvented by Douglas Engelbert in 1963, and pioneered by Xerox in1963, and pioneered by Xerox in 1970.1970.  The mouse is the device that controlsThe mouse is the device that controls the movement of the cursor orthe movement of the cursor or pointer on a display screen.pointer on a display screen.  It serve as an extension of your handIt serve as an extension of your hand into the computer screen.into the computer screen.
  • 12. PROPER HANDLING OF THE COMPUTER MOUSE
  • 13. MOUSE ACTIONMOUSE ACTION  Pointing- moving the mouse to itsPointing- moving the mouse to its specific place or destination.specific place or destination.  Left clicking or clicking- pressing theLeft clicking or clicking- pressing the left mouse button once.left mouse button once.  Right clicking- pressing the rightRight clicking- pressing the right mouse button once.mouse button once.  Double clicking- pressing the leftDouble clicking- pressing the left mouse button twice.mouse button twice.  Dragging- holding the left mouseDragging- holding the left mouse button while moving.button while moving.
  • 14.  MICROPHONE- allowsMICROPHONE- allows computer to receive andcomputer to receive and record sound.record sound.  SCANNER- creates aSCANNER- creates a computerized version of acomputerized version of a photo or illustration.photo or illustration.  DIGITAL CAMERA- takesDIGITAL CAMERA- takes pictures without film.pictures without film.  GRAPHIC TABLET- use toGRAPHIC TABLET- use to draw objects using a pen.draw objects using a pen.  JOYSTICK- a handheld stickJOYSTICK- a handheld stick often use to control games.often use to control games. OTHER INPUT DEVICESOTHER INPUT DEVICES