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Getting Ready for OHS

Getting Ready for OHS. Open Heart Surgery!. What’s a PC?. P ersonal C omputer These computers were originally designed by IBM in the 70s. Your computer at home is a PC. The workstations at KLDCS are PCs. Someone who uses a PC is called a USER. PC Parts (External).

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Getting Ready for OHS

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  1. Getting Ready for OHS Open Heart Surgery!

  2. What’s a PC? • Personal Computer • These computers were originally designed by IBM in the 70s. • Your computer at home is a PC. • The workstations at KLDCS are PCs. • Someone who uses a PC is called a USER

  3. PC Parts (External) • Typically, PCs have a Monitor, Tower (or case), a keyboard and a mouse. • Note: Anything you plug into the Tower is called a “peripheral device” (mouse, speakers, keyboard…)

  4. PC Parts (Internal) • There are 5 major components that make PCs work: • Hard Drive • CPU • RAM • Mother Board • Power Supply

  5. Hard Drive • Stores data magnetically (This means it doesn't disappear when the computer is switched off) • Can store very large quantities of data. (4 Tb+) Read/write arm swings while the disks all spin

  6. Hard Drive 2 • Usually made of glass or aluminum with a magnetic coating. Very Shiny, and must be kept perfectly clean!

  7. Hard Drive 3 Cons: • Relatively slow access time. (100 000 times slower than RAM!) Pros: • Cheap memory (0.0001 $/mb) • Non-volatile – This means you can turn the computer off and you don’t loose your stuff. • NOTE: When you click “Save” you are putting your project on the HD.

  8. CPU • Central Processing Unit The Brains fo the PC

  9. CPU 2 • Also Called a “Microprocessor” • Everything that happens in a PC goes through the CPU. (just like your brain)

  10. CPU 3 • CPUs are made of billions of interconnected electric circuits. • The speed of a CPU is measured in “Hertz” or “how many operations it can perform every second” • A 2 GHz processor can do up 2 billion things each second!

  11. RAM

  12. RAM • “Random Access Memory” • It is REALLY fast memory right near the CPU • It holds currently running programs • Stores Data Electronically  Volatile!

  13. RAM 2 • Computers these days have around 2-4 Gb of Ram. • My first computer only had 1 Mb! That’s 2000 times less! • Having more ram makes your computer faster, because less information needs to go out to the HD.

  14. Mother Board (MOBO)

  15. Mother Board • The main circuit board in the PC. It Contains: • RAM • CPU • Video Card (Sends the signal to monitor) • Sound Card (Sends a signal to the speakers) • Much more!

  16. Mother Boards • It is the mother board that determines what components you can put in your machine. EX: If you want a fancy gaming video card, your mobo must be able to support it!

  17. Power Supply • The power supply converts the 110v AC power from your wall into the very small amounts of power your computer needs to run.

  18. Summary of Components • Hard drive • Non-volatile, stores info magnetically, very large storage device. • CPU – The brain! Everything that a PC does goes through the CPU. • RAM – Really fast memory right by the CPU • Stores data of currently running programs • Stores info electrically • Mother Board • Brings all the PC parts together • Power Supply • Converts household power to power a computer can use!

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