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INFORMATION TECHNOLOGY >
Inside the System Unit
Power Supply
A power supply is an electronic device that supplies electric energy to an electrical load. The primary function of a power supply is to convert one form of electrical energy to another and, as a result, power supplies are sometimes referred to as electric power converters. Some power supplies are discrete, stand-alone devices, whereas others are built into larger devices along with their loads. Examples of the latter include power supplies found in desktop computers and consumer electronics devices
Motherboard
A motherboard is the main printed circuit board (PCB) found in computers and other expandable systems. It holds many of the crucial electronic components of the system, such as the central processing unit (CPU) and memory, and provides connectors for other peripherals. Unlike a backplane, a motherboard contains significant sub-systems such as the processor and other components.
Microprocessor
The microprocessor is a multipurpose, programmable device that accepts digital data as input, processes it according to instructions stored in its memory, and provides results as output. It is an example of sequential digital logic, as it has internal memory. Microprocessors operate on numbers and symbols represented in the binary numeral system.
• Multicore processors (2, 4, 6, 8) have more than one processor “core” on a single silicon chip which allows computers to run faster.
• A graphics processing unit (GPU) is a specialized processor used to manipulate three-dimensional(3- D) computer graphics.
Processing Speed
Every microprocessor contains a system clock, which controls how fast all the operations within a computer take place (the chip’s processing speed).
Older CPU processing speeds are in megahertz.
1 MHz = 1 million cycles per second
Current CPU processing speeds are in gigahertz.
1 GHz = 1 billion cycles per second
The faster a CPU runs, the more power it consumes, and the more heat it generates
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RIP Kobe Bryant you'll never be forgotten.