CHAPTER 2 System Unit Components & Types of Storage

CHAPTER 2 System Unit Components & Types of Storage

1. SYSTEM UNIT

   • Video Card
   • Sound Card
   • Processor
   • Memory
   • Drive Bay(s)
   • Power Supply

2. Processor

   • Central Processing Unit (CPU)
   • For every instruction, a processor repeats a set of four basic operations, which comprise a machine cycle
   • Contains registers, that temporarily hold data & instructions
   • A processor chip generates heat that could cause the chip to burn up

3. Memory

   • kilobytes (KB or K), megabytes (MB), gigabytes (GB), or terabytes (TB)
   • Volatile Memory
   • Nonvolatile Memory

4. Ports & Connector

   • can connect up to 127 different peripherals together with a single connector

5. Power Supply

   • Converts the wall outlet AC power into DC power

6. Storage

   • Hard Disk
     • removable hard disk that you insert & remove from a drive
   • Flash Memory Storage
     • USB flash drives plug into a USB port on a computer or mobile device
   • Cloud Storage
     • Internet service that provides storage to computer users
     • Flickr, Google Docs
   • Optical Disc
     • store software, data, digital photos, movies, and music
     • CD-ROM, CD-R, CD-RW