Customizable buttons extra button on the mouse can be

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-Customizable buttons: extra button on the mouse can be programmed into function you use the most to speed task-Web search: Allows to quickly highlight a word/phrase and the press the search button to start a web search. -File storage: include wireless USB received that contains a flash memory to store/back up your file. Image inputs: Digital cameras, Camcorders & cell phones for Image, video, Scanners, Webcams for live video. Sound input: MicrophonesUse for: Podcast, Videoconferencing, Internet phone class, Speech recognition. Output Devices: Enable you to send processed data out of your computer. Take form of:-Text, picture, sound, video.One common output device: A monitor: display text, graphic, videos as soft copies (copies that you can see only on-screen) A printer: created tangible/hard copies of text, images.Output devices make : Soft copies & hard copies (print) Monitor Types: oLCD: Liquid crystal display => Flat panel, light and energy efficient Feature:- Screens are grids made up of millions of tiny dots called pixels; each pixel is composed of red, blue, green sub pixels; Liquid crystal is sandwiched between 2 transparent layers to from images.oLED: Light-Emitting Diode => More energy efficient than LCD, Better color, thinner paneloCRT: legacy technology Printers Types: -Inkjet printers: Spray tiny drops of ink onto page -Laser: Use laser beams and static electricity to deliver toner to page -All in one printers, Plotters, thermal printers. Choosing a printer:Speed, Resolution, Color output, Use & cost, Cost of consumables. The Motherboard: the key circuit board holding the essential processing parts.
oCPU, RAM, Expansion cards & Slot, Built-in components are LocatedRAM (Random access memory): - Stores instruction and data, temporary storage, consists of several memory cards/modules.**RAM is needed for System software, productivity software, Entertainment and graphic programs. Types of RAM: DDR2, DDR3, SRAM, DRAM, SDRAMWhat to consider when adding RAM in ur computer:-Type of RAM module-Amount of RAM: Maximum limit, Number of slots, Operating systemHow much RAM you need?-Determine by looking at the memory requirement for each program and add them up Kernel memory:The memory that the operating system uses. Physical Memory: The amount of RAM actually sitting on memory module in the computerMemory modules/Memory cards: the small circuit boards that hold a series of RAM chips, fit into special slots on the motherboards. Now called Dual inline memory modules (DIMMs)ROM (read-only memory): Stores startup instruction, Permanent storage. CPU (central processing Unit ): **Brain of the computer. Composed of 2 unitsa control unit and a arithmetical logic unit (ALU). oControl unit: coordinates the activities of all the other computeroALU: responsible for performing arithmetic calculation and makes logic and comparison decisions.

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