All about Laptop Parts What you need to know to buy a laptop without getting scammed.

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Presentation transcript:

All about Laptop Parts What you need to know to buy a laptop without getting scammed

Laptop vs Desktop vs Tablet Factors: –Portability –Cost –Ease of typing –Expandable Memory –Connectivity –Ergonomics

Computer Parts There are 5 major components that make PCs work: –Hard Drive –CPU –RAM –Mother Board –Power Supply –Screen

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

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

Hard Drive 3 Cons: Relatively slow access time. ( times slower than RAM!) Pros: Cheap memory ( $/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.

CPU Central Processing Unit

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

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 4 GHz processor can do up 4 billion things each second!

RAM

“Random Access Memory” Often just called “Memory” It is REALLY fast memory right near the CPU It holds currently running programs Stores Data Electronically  Volatile!

RAM 2 Computers these days have around 2-6 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.

Mother Board (MOBO)

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

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!

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.

Screen Screens are measured in inches from corner to corner. The resolution is how many pixels go up the side of the screen and along the top.

Size vs Resolution iPhone 6 screen resolution is 1920x1080 with a 4.7” screen (326 pixels per inch) A Cheap laptop with the same resolution on a 14” screen gives you only 155 ppi Ask a sales person how the resolution translates into ppi.

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!