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TOPIC 2 : HARDWARE & SOFTWARE - Coggle Diagram

- - - - Bit (Binary digit) b 0,1
      - Byte B 8 bits = 1 character
      - Kilobyte (KB) KB 1024 bits
      - Megabyte (MB) MB 1024 KB
      - Gigabyte (GB) GB 1024 MB
      - Terabyte (TB) TB 1024 GB
      - Petabyte (PB) PT 1024 TB
      - Exabyte (EB) EB 1024 PB
      - Zettabyte (ZB) ZB 1024 EB
      - Yottabyte (YB) YB 1024 ZB
    - - Definition ; Hardware that records and/or retrieves items to and from storage media
        
        Storage Media
        
        Types of Storage :
        
        Hard Disks
        
        Function :
        
        • Storage device that contains one or more inflexible,
        
        circular platters that use magnetic particles to store
        
        data, instructions and information
        
        Characteristics:
        
        • High-capacity storage.
        
        • Components enclosed in airtight, sealed
        
        case for protection.
        
        Types ;
        
        External Hard Disk
        
        Internal Hard Disk
        
        Solid State Drives
        
        Function ; A storage device that uses flash memory to store data, instructions and information
        
        Characteristics:
        
        Current SSDs storage capacities up to 8 TB
        
        SSDs contain no moving parts
        
        Benefits :
        
        • Faster access time.
        
        • Faster transfer rates.
        
        • More durable & shock resistant
        
        • Use less energy →Generate less heat & consume less power
        
        USB Flash Drives
        
        Definition : Flash memory storage is a storage media that uses solid-state chip that maintains stored data without
        any external power source.
        
        Type:
        
        USB flash drive
        
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        2.Memory cards
        
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        Optical Discs
        
        Function : Optical disc is a storage media that consists of flat,round, portable disc made of metal, plastic and
        lacquer that is written and read by a laser.
        
        Types :
        
        ii. Digital Video Disc (DVD)
        
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        iii. Blu-ray Disc (BD)
        
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        i.compact Disk (CD)
        
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        5.Memory Cards
        
        Definition : The physical material on which a computer keeps data,information, programs and applications.