Displays (1)
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16 Terms
Two key factors for choosing Displays
Resolution
Refresh Rate
Resolution?
dictates how many pixels (horizontal × vertical) create the images on your screen. like (1920*1080)
Refresh Rate?
dictates how many times per second the screen updates the image. (60Hz, 144Hz)
Printers subject? 3
Laser Printers
Inkjet Printers
Connection Methods
How a Laser Printers work?
Use Toner powder and fuse it onto the paper with heat.
Laser Printers Pros?
Very fast
economical for large volume printing
quality text
Laser Printers Cons?
Expensive
heat and odor
How a Inkjet Printers work?
Use liquid Ink sprayed onto the paper
Inkjet Printers Pros?
Cheap
excellent for color photo printing
Inkjet Printers Cons?
Ink dries out quickly if unused
long-term cost of cartridges is high
What is the Connection Methods? 3
Wired: USB is the most common
Wireless: Wi-Fi: Most used in networked environments
Bluetooth: Used for peripherals
What is the meening of word PSU?
Power Supply Unit
What is the Power Supply Unit?
The Power Supply Unit (PSU) converts wall electricity (AC) into continuous electricity (DC) for the components.
Two key factors of PSU?
Calculation and Wattage
Efficiency Rating
Calculation and Wattage?
You must calculate the wattage required by each component (CPU and GPU are the main consumers) and choose a PSU with about
20% higher wattage to ensure stability.
Efficiency Rating?
Always look for the 80 PLUS certification (e.g., Bronze, Silver, Gold). This certification indicates the PSU's efficiency in converting power, meaning it wastes less wattage as heat, making it more stable and energy efficient.
