Input and output units Man performs communication with PC through special devices called wireless i

Input and output units Man performs communication with PC through special devices called wireless intercom doorbell input units and output units. Through input units of personal pc are given commands, entered podatocite.Zadachata incoming units is applied commands and data in analog form (form number, text, sound or image), to translate them into electrical impulses that series central unit can now all to recognize and place them in memory as bits (zeros and ones). Keyboard inputs Mouse Scanner mic Digital Camera Camera graphical dashboard light pen Commonly used keyboard input unit's keypad (Ang. Keyboard). It is similar to the common wireless intercom doorbell keyboard wireless intercom doorbell typewriter. A parallel typewriter keyboard keyboards are three main buttons, as follows: alfabeska group numerical group and a group of function keys (F1 to F12). Some keys have two characters, and some of what is written komada is given with their hitting. Each key on the keyboard has its own code. When you press a key code is sent to the computer. Standard keyboards have 102 or 101 button, and there are keyboards with 130 keys and more. There are ergonomic wireless intercom doorbell keyboards shaped by the position of the hands when using the computer. Explain the function keys: Caps Lock, Shift, Num Lock, Backspace, Delete, Enter, Ctrl + Alt + Delete, Space. Mouse Today's software runs in a graphical environment, where no commands are entered by typing, but selecting. The mouse is used to select and activate komandite.Gluvcheto moving on a flat surface (or a special surface called ped (Ang. Pad)). His movement is manifested through movement of special pointer - arrow on the screen. When the arrow will find over command for the required action, press one of the buttons wireless intercom doorbell found at the top of the gluvcheto.Gluvcheto associated with mouse cable through, but there are wireless mice that communicate through infracrfenite rays or radio waves through thin. Scanner scanner (Scanner) is an optical input device that can read text or graphics that information and turn it into an electronic form. Bar code reader Bar code (Barcode) Reader's optical input device, which can usually be found in stores. Reading the bar code printed on the packaging of the product, this device enables fast, easy and error-free entry of product wireless intercom doorbell data recovery at the checkout, wireless intercom doorbell which saves quite a time. Audio-visual devices These are devices that provide audio-visual input data (audio, image and video) in the computer and turning them into digital form. Such devices: microphone, digital camera and video camera. Taken from: http://itedukacija-informatika.blogspot.com/2010/08/sliki.html