Technology

Technology

1. COMPUTER

   • machine that processes information
     • TWO PARTS
       • HARDWARE
         • physical components of the computer
         • COMPONENTS
           • TOWER
           • PERIPHERALS
       • SOFTWARE
         • instructions and data that make the computer work
         • COMPONENTS
           • PROGRAMS
           • DATA
   • TYPES
     • PERSONAL COMPUTERS
       • small computers designed to serve a person
         • DESKTOP COMPUTER
         • LAPTOP
         • TABLET
         • SMARTPHONE
     • MAINFRAMES
       • MEDIUM-SIZED COMPUTERS
       • LARGE STORAGE CAPACITY
       • PROCESSING DATA AT HIGH SPEED
       • CONNECT THOUSANDS OS USERS AT THE SAME TIME
     • SUPERCOMPUTERS
       • PROCESSIG CAPACITY OF VERY LONG INFORMATION
       • SMALLER MACHINES CONNECTED TOGETHER
       • PROCESSING WOULD TAKE DAYS OR YEARS
   • ELEMENTS
     • MOTHERBOARD
       • FUNCTIONS
         • SUPPORT
         • COMUNICATION BETWEEN COPUTER-COMPONENTS
     • MICROPROCESSOR
       • COMPUTER'S BRAIN
       • LOCATED IN THE MOTHERBOARD
     • RAM MEMORY
       • TEMPORARILY STORES DATA
     • POWER SUPPLY
       • CONVERTS ALTERNATING CURRENT INTO DIRECT CURRENT
       • REDUCE VOLTAGE RECEIVEDFROM ELECTRICAL POWER SYSTEM
     • PERIPHERALS
       • ALLOW THE COMPUTER TO COMMUNICATE OUTSIDE
         • INPUT
           • KEYBOARD
           • MOUSE
           • WEBCAM
           • SCANNER
           • GAME CONTROLLER
           • MICROPPHONE
           • BARCODE SCANNER
           • GRAPHICS TABLET
         • OUTPUT
           • MONITOR
           • PRINTER
           • SPEAKERS
           • PLOTTER
         • INPUT/OUTPUT
           • HARD DRIVE
           • CD AND DVD READER/WRITTER
           • USB MEMORY
           • MODEM

2. HARD DISK AND DVD

   • HARD DRIVE
     • STORES PERMANENTLY FILES AND PROGRAMS
     • CONNECTED TO MOTHERBOARD
     • EXTERNAL HARD DRIVES
   • OPTICAL MEMORY DEVICES
     • PLASTIC DISCS WITH INFORMATION OVER THEIR SURFACE
       • CD AND DVD
         • READ ONLY
         • RECORDABLE
         • REWITABLE
     • CAPACITY 700MB

3. PORTS AND EXPANSION CARDS

   • PORTS
     • ELECTRICAL CONNECTIONS THAT COMMUNICATE THE MICROPROCESSOR WITH THE PERIPHERALS
       • USB
       • PS2
       • VGA
       • HDMI
       • SOUND
       • NETWORK
   • EXPANSION CARDS
     • PRINTED CIRCUITS, SMALLER AND LESS COMPLEX THAN MOTHERBOARD
       • VIDEO CARD
       • SOUND CARD
       • NETWORK CARD
       • USB CARD
       • OTHER