2. MotherBoard
The Motherboard is a central printed circuit board which holds many
different components such as CPU, RAM. Optical Drive, Hard Drive,
BIOS and many other components which are held together in order
for the computer to function successfully.
The Motherboard also controls standard peripherals devices which are
attached by slots or ports such as Keyboard, Mouse, Monitor,
Speakers and many other devices.
As the Motherboard is a printed circuit board it provides all the
connection, pathways and lines which connects all the different
components in the computer to each other.
This shows that the motherboard is the most essential component in a
personal computer
3. RAM
RAM [Random Access Memory] computer memory which can be accessed
randomly, this kind of memory is commonly found on computers
and other devices, such as printers.
There are two different types of RAM
DRAM [Dynamic Random Access Memory]
DRAM needs to be refreshed thousands of times per second, It also
supports access times for about 60 nanoseconds.
The other type of RAM is SRAM[Static Random Access Memory]
SRAM is faster than DRAM as it does not need to be refreshed it can also
give access times as low as 10 nanoseconds but requires more
power. SRAM is faster than DRAM but is not as common due to the
cost of it.
You can only Read and Write on a RAM chip
Both Rams are Volatile as they lose their content when power is turned
off.
4. CPU
The CPU [Central Processing Unit] otherwise known as the
processor is an electronic
circuit that executes computer programs.
The CPU is hosted in a single chip called “Microprocessor.”
The CPU is inserted directly into a CPU Socket, Pin side down with
ZIF [Zero Insertion Force.]
When Replacing or Upgrading a CPU you need to check the
motherboard manufacturer‟s specifications before attempting this
to see if the CPU is compatible.
The speeds of CPU‟s is measured in MHz [Megahertz]
5. Heat Sink
Heat Sinks are designed to lower the temperature of all the components on the
motherboard by dissipating the heat into the surrounding air.
All CPUs require a heat sink so it does not over heat. Heat sinks can come without
a fan which are called „Passive Heat Sink.‟ If the heat sink has a fan it is
called an „Active Heat Sink‟.
The heat sink is manufactured out of Zinc or Copper alloy which is then attached
to the processor with a thermal material that draws heat away from the
processor and directs towards the heat sink.
6. Graphic Card
A Graphic Card can also be referred to a Video Card and it is a
piece of hardware which is installed in a computer.
A Graphics Card function is to translates the binary data from
the CPU and turn it into a picture which consists of over a
million pixels.
The Graphic Card is send information and it has to decide how
to use the pixels which are sent to the monitor through a
cables.
7. 3G
3G is a form of connecting various devices to a network such as 3G.
3G is the third generation of wireless technology, it comes with enhancements over
the previous wireless technology.
For example the 3G network has a:
-Higher speed transmission
-Advanced Multimedia Access
-Global Roaming
-Enhanced audio and video streaming
-Web and WAP browsing at higher speeds
The 3G wireless technology is used mostly with mobile phones and handsets.
The transfer rate for the 3G network is between 128-144 Kbps but this does not
come cheap and providers offer it within somewhat of a costly package
8. 4G
4G is a form of connecting various devices to a network such as 4G.
4G is the forth generation of wireless technology, it comes with enhancements over
the previous wireless technology.
For example the 4G network has a:
-Higher speed transmission
-Advanced Multimedia Access
-Global Roaming
-Enhanced audio and video streaming
-Web and WAP browsing at higher speeds
-Consumes more media
The 4G wireless technology is used mostly with mobile phones and handsets
9. WiFi
A WiFi is a wireless network which used radio waves
and the communication across the wireless network is
very similar to a two-way radio communication.
The WiFi translates data into radio signal which
transmits the signals using an antenna
The wireless router receives the signals which is
decoded and the router sends the information to the
internet using a physical Ethernet connection.
10. Ethernet
The Ethernet is a local area network which was
developed by Xerox Corporation.
The Ethernet uses bus or star topology which supports
data and also allows the user to use a transfer rate of
10 Mbps.
The Ethernet cable use a RJ45 jack at either end to
connect from A to B.
