Comp

    Cards (17)

    • What does the ALU do after storing results?
      It sends signals back to the control unit
    • What is the primary function of the ALU?
      To perform mathematical calculations and logical operations
    • Where does the ALU store the results of its operations?
      Back into registers
    • Why are arithmetic operations essential for the ALU?
      They are crucial for scientific simulations and data analysis
    • What is the role of registers in relation to the ALU?
      • Store data temporarily during processing
      • Provide quick access to data for the ALU
    • What is cache memory used for?
      Speeds up access to main memory
    • What does the Control Unit do in the CPU?
      Directs instruction execution
    • What are general purpose computers designed for?
      Variety of uses
    • How do general purpose computers differ from embedded systems?
      Embedded systems perform limited tasks well
      function without a user
    • What components make computers work?
      Hardware, software, and CPU
    • What type of data can be stored in RAM?
      Both readable and writable data
    • Why is RAM considered easy to read and write?
      It allows quick access to data
    • Magnetic storage
      HDD's magnetic tapes
      Uses spinning disks(platters)coted with magnetic mat
      R/W head moves across disk to store and retrieve data
      Data is stored in tiny magnetised areas (0s and 1s
    • Mags pros and cons
      Large capacity at 1T plus
      Cheaper per gb compared to ssds

      Slower cus of moving parts
      Fragile
      Uses are servers and comps
    • Optical storage
      Cds DVD
      Laser burns tiny pits onto a disc
      It then reads reflection from these pits to retrieve data
      Pit is 0 land is 1
    • Op pros and cons
      Cheap to make
      Portable
      Limited capacity
      Slow RW speeds compared to hdds and ssds
      Movie and games
    • Solid state storage
      USB SSD
      Uses flash memory with no moving parts

      Very fast
      More durable
      Energy efficient

      More expensive
      Lim num of write cycles
      Laptops phones
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