Please enable JavaScript.
Coggle requires JavaScript to display documents.
Power up your computer (Pressing power button sends a signal to computer…
Power up your computer
Wake up all hardware components in computer
Many of hardware components are connected on the mother board
Motherboard
is expandable circuit board that manages communication among systems various parts
start up all needed software programs
Once POSt tests passed and BIOS has verified all peripherals, it starts to load
Operating Sysem
KERNEL
is a first part of Operating system to be loaded
Operating system is also dealing with all programms running on your computer
Kernel
is one of the lowest pieces of software in operatng system. It`s function to be a
bridge between hardware and other software,
that might be running on computer
The execution of Software is handled by
CPU
, processor. It`s the heart of machine, because responsible for putting the "compute" in "computer" by performing the logic of software programs. It has fan to cool itself
operating system's code is stored on your computer's hard drive
Pressing power button sends a signal to computer
power supply
Once computer has power,
BIOS
starts up
The BIOS contains the instructions that the computer needs to follow in order to start up. These instructions are stored on a separate chip on the motherboard, and the BIOS plays a crucial role in the process of powering on
First BIOS reads few system settings from
CMOS
Then BIOS ensures that
computer video card
is working fine and it can output information to computers display
Once video is good to go, BIOS performes a series of power on self test -
POSTs
, to make sure that all of computer harare works fine
first POST test s that
RAM
is totally readable and writable
Next, the POST checks for any
peripherals
attached to the computer
.
Computer video card is responible for handling computation for colouring pixels that makes up computer display
Video card may be connected with help of PCI slot, PCI express slot or AGP(accelerated graphics port, which was designed having graphic card in mind
PCI slots
on motherboard may be used for connecting additional harware
CMOS
has its own lithium battery(backup) so that all systems settings aren`t lost,when computer looses power
Power supply
plugs directly into an electrical outlet and manages the electric voltage that is sent to the components of your machine
Typically has equipped with a number of fans that circulate air throughout your computer.
The
power supply
connects to the motherboard via the power connector
channeling power from your outlet to your computer.
Motherboard organization
North Bridge
coordinates work of hat components that
frequently interface with the CPU
RAM
CPU
graphics card
South Bridge
other component`s we have described
HDMI
.
has the ability to transfer both audio and video using a single cable
DVI
.both are digital
DVI AND VGA require a separate cable in order to transfer audio between devices.
VGA
utilizes an analog signal
generally expensive to convert a VGA to DVI or HDMI