Inside the case
The case contains and protects the electronics of the computer or mobile device from damage
Motherboard - main circuit board of the computer
- computer chip contain integrated circuit
Processor - central processing unit (CPU), interprets and carries out the basic instructions that operate a computer.
Multi-core processor - a single chip with two or more separate processor cores
Control Unit - the component of the processor that directs and coordinates most of the operations in the computer.
Arithmetic Logic Unit - performs arithmetic, comparison, and other operations.
For every instruction, a processor repeats a set of four basic operations, which consist of a machine cycle.
Intel is the leading manufacturer of personal computer processor chip. processor chip generates heat that could the chip to malfunction or fail.
So, they requires additional cooling :
- Heat sinks
- Liquid cooling technology
- Cooling mats
Analog signals are continuous and vary in strength and quality
Digital signals are in one of two states: on or off
Most computer are digital
Memory consists of electronic components that store instructions waiting to be executed by the processor, data needed by those instructions, and the results of processing the data
Stores three basic items :
- The operating system and other programs
- Applications
- Data being processed and the resulting information
The system unit contains two types of memory:
1. volatile memory (RAM)
2. non-volatile memory (ROM, CMOS)
Flash memory can be erased electronically and rewritten.
An adapter card enhances functions of a component of a desktop or server system unit and/or provides connections to peripherals.
An expansion slot is a socket on a desktop or server motherboard that can hold an adapter card.
The power supply or laptop AC adapter converts the wall outlet AC power into DC power
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