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FUNDAMENTAL PARTS OFFUNDAMENTAL PARTS OF
THE COMPUTERTHE COMPUTER
INPUT DEVICESINPUT DEVICES
IS ANY PERIPHERALIS ANY PERIPHERAL
GENERATES INPUTGENERATES INPUT
FOR THEFOR THE
COMPUTER ANDCOMPUTER AND
ALLOWS USERS TOALLOWS USERS TO
INFORMATION INTOINFORMATION INTO
THE COMPUTER.THE COMPUTER.
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
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.
SPECIAL KEYS-SPECIAL KEYS- functionfunction
keys, control keys, arrowkeys, control keys, arrow
keys, Caps Lockkeys, Caps Lock keykey etc.etc.
QWERTYQWERTY-- the standardthe standard
lay-out of letters, numbers,lay-out of letters, numbers,
and punctuation of theand punctuation of the
DVORAKDVORAK- another keyboard- another keyboard
design, which has letterdesign, which has letter
positioned for speed typing.positioned for speed typing.
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
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.
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
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
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
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
Invented by Douglas Engelbert inInvented by Douglas Engelbert in
1963, and pioneered by Xerox in1963, and pioneered by Xerox in
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.
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.
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