Input devices

INPUT INPUT DEVICESDEVICES

FUNDAMENTAL PARTS OF FUNDAMENTAL PARTS OF THE COMPUTERTHE COMPUTER

INPUT DEVICESINPUT DEVICES

IS ANY PERIPHERAL IS ANY PERIPHERAL APPLIANCEAPPLIANCE THAT THAT GENERATES INPUT GENERATES INPUT FOR THE COMPUTER FOR THE COMPUTER AND ALLOWS AND ALLOWS USERS TO ENTER USERS TO ENTER INFORMATION INTO INFORMATION INTO THE COMPUTER.THE COMPUTER.

KEYBOARDKEYBOARD

THE SET OF TYPEWRITER THE SET OF TYPEWRITER LIKES KEYS THAT ENABLES LIKES KEYS THAT ENABLES YOU TO ENTER DATA INTO YOU TO ENTER DATA INTO A COMPUTER. IT IS A COMPUTER. IT IS SIMILAR TO ELECTRIC SIMILAR TO ELECTRIC TYPEWRITER KEYBOARDS TYPEWRITER KEYBOARDS BUT CONTAIN ADDITIONAL BUT CONTAIN ADDITIONAL KEYS.KEYS.

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- function keys, function keys, control keys, arrow keys, control keys, arrow keys, Caps Lock Caps Lock keykey etc. etc.

LAY-OUTLAY-OUT

QWERTYQWERTY- - the standard the standard lay-out of letters, numbers, lay-out of letters, numbers, and punctuation of the and punctuation of the keyboard.keyboard.

DVORAKDVORAK- another keyboard - another keyboard design, which has letter design, which has letter positioned for speed typing.positioned for speed typing.

SPECIAL KEYSSPECIAL KEYS

Control KeyControl Key and Alternate and Alternate Key- holding down while Key- holding down while pressing another character pressing another character to perform command to perform command depending on the program depending on the program running.running.

Arrow Keys-Arrow Keys- for moving the for moving the cursor or insertion point cursor or insertion point right, left, up, and down.right, left, up, and down.

Shift Key-Shift Key- a key causes a key causes the system to output a the system to output a capital letter.capital letter.

Function Keys-Function Keys- special special keys that have different keys that have different meanings depending on meanings depending on the program running. the program running. Range or labeled from Range or labeled from F1-F10 or 12 or 15.F1-F10 or 12 or 15.

Caps Lock-Caps Lock- when when activated, causes all activated, causes all subsequent letters to be subsequent letters to be uppercase.uppercase.

Escape Key-Escape Key- use to go use to go cancel a command or go cancel a command or go back to previous screen.back to previous screen.

Space Bar-Space Bar- use to enter use to enter space rather than a space rather than a character.character.

Enter Key-Enter Key- use to enter use to enter or execute a command.or execute a command.

Backspace key- Backspace key- deletes characters to the left of the cursor

Other Keys-Other Keys- Tab key, Insert Tab key, Insert Key, Delete Key, Key, Delete Key, Home/End, Page Up/Down, Home/End, Page Up/Down, Scroll Lock, Num Lock Scroll Lock, Num Lock

MOUSEMOUSE

Invented by Douglas Engelbert in Invented by Douglas Engelbert in 1963, and pioneered by Xerox in 1963, and pioneered by Xerox in 1970. 1970.

The mouse is the device that controls The mouse is the device that controls the movement of the cursor or the movement of the cursor or pointer on a display screen. pointer on a display screen.

It serve as an extension of your hand It serve as an extension of your hand into the computer screen.into the computer screen.

PROPER HANDLING OF THE COMPUTER MOUSE

MOUSE ACTIONMOUSE ACTION

Pointing- moving the mouse to its Pointing- moving the mouse to its specific place or destination.specific place or destination.

Left clicking or clicking- pressing the Left clicking or clicking- pressing the left mouse button once.left mouse button once.

Right clicking- pressing the right Right clicking- pressing the right mouse button once.mouse button once.

Double clicking- pressing the left Double clicking- pressing the left mouse button twice.mouse button twice.

Dragging- holding the left mouse Dragging- holding the left mouse button while moving. button while moving.

MICROPHONE- allows MICROPHONE- allows computer to receive and computer to receive and record sound.record sound.

SCANNER- creates a SCANNER- creates a computerized version of a computerized version of a photo or illustration.photo or illustration.

DIGITAL CAMERA- takes DIGITAL CAMERA- takes pictures without film.pictures without film.

GRAPHIC TABLET- use to GRAPHIC TABLET- use to draw objects using a pen.draw objects using a pen.

JOYSTICK- a handheld stick JOYSTICK- a handheld stick often use to control games.often use to control games.

OTHER INPUT DEVICESOTHER INPUT DEVICES