INSIDE COMPUTERS AND MOBILE
DEVICES
Inside the case
·
The case contains and protects the electronics
of the computer or mobile device from damage
·
Electronics components such as video card,
power supply and fan, battery, sound card, processor and others.
Motherboard
The motherboard
is the main circuit board of the computer; a computer chip contains
integrated circuits.
Processors
·
The processor,
also called the central processing unit
(CPU), interprets and
carries out the basic instructions that operate a computer. Contain a control unit and an
arithmetic logic unit (ALU)
·
A multi-core
processor is a single chip with two or more separate processor cores
·
For every instruction, a
processor repeats a set of four basic operations, which consist of a machine
cycle. All the basic operation are, fetch, decode, execute, store.
·
The leading manufacturers
of personal computer processor chips are Intel and AMD.
·
A processor chip generates
heat that could cause the chip to malfunction or broke it. So require
additional such as cooling Heat sinks , Liquid cooling technology, Cooling
mats.
Cloud Computing
·
Home and business users choose cloud computing
for a variety of reasons like, accessibility, cost saving, space saving and
scalability.
Data
Representation
·
Analogue signals are
continuous and vary in strength and quality and digital signals are in one of two states:
on or off.
·
Digital signals are in one
of two states: on or off
Memory
·
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
categories of items; The
operating system and other programs, Applications, Data being processed and the
resulting information.
·
The system unit contains two types of memory:
Volatiled memory and nonvolatiled memory.
·
Volatile memory will loses its contents when
power is turned off such as RAM.
·
Nonvolatile memory does not lose contents when
power is removed such as ROM, flash
memory, and CMOS devices.
·
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.
Power
Supply and Battery
·
The power supply or laptop
AC adapter converts the wall outlet AC power into DC power.
·
Mobile computers and devices can run using
either a power supply or batteries.
·
Batteries typically are rechargeable
lithium-ion batteries.
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