Input devices
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The document discusses various input devices for computers. It describes keyboards as having alphanumeric keys, punctuation keys, and special keys like function keys. It explains how a mouse controls cursor movement on a screen and its functions like pointing, clicking, dragging. Other input devices mentioned are microphones, scanners, digital cameras, graphic tablets, and joysticks.
Input devices
- 1. INPUTINPUT DEVICESDEVICES FUNDAMENTAL PARTS OFFUNDAMENTAL PARTS OF THE COMPUTERTHE COMPUTER
- 3. 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.
- 5. 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.
- 6. 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.
- 7. SPECIAL KEYS-SPECIAL KEYS- functionfunction keys, control keys, arrowkeys, control keys, arrow keys, Caps Lockkeys, Caps Lock keykey etc.etc.
- 9. 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.
- 11. 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.
- 12. 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.
- 13. 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
- 14. 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
- 15. 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.
- 18. PROPER HANDLING OF THE COMPUTER MOUSE
- 19. 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.
- 20. 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