Computer cases are a visible part of our computers
it is used to serve as a protective structure for the rest of the internal components like motherboard, RAM, hard drive, cooling fans, and other expansions cards from the external influences
computer cases is also called - PC towers or Computer towers
full tower case - comes with fair size and weight, which usually has better internal cooling
Full towers cases have always been excellent for gamers and enthusiasts
Rails most modern pieces with an easy solution through the tiresome chore of mounting new devices in dry bays
Back Plates are holes are designed to allow various external connectors on the motherboard the poke through the back of the case
Punch metal plate is referred to as back plate of the computer case
Two types of power supply, AT and ATX
AT i- its older style, it held away from the early days of the PC but they rarely use now
Most modern PCs use a n ATX power supply
Power connection - power supplies must plug into power outlet
Motherboard power - there must be some connection to provide power to the motherboard
Peripheral Connections - there must be connectors to rpvide power to internal devices
Fan - this critical component both cools the inside of the power supply and provides a cooling airflow throughout the case
Power Supply is rated in watts
Watt - is the standard measurement unit of power, or energy/time
A PC requires sufficient wattage for the machine to run properly
If it doesn't receive the necessary amount, several problems occur:
The PC will fail to complete the power on self test
The PC will complete the POST but will fail to load the operating system
The PC will complete the POST and load but it will reboot spontaneously once the load is applied to the CPU or other hardware
400 Wattspower supply is very common wattage
The power supply fan provides the basic cooling for the PC
Power supply fans - it also provides a constant flow of the outside air throughout the interior of the computer case
Cooling is therefore a vital consideration when building a computer
Electricity equals heat
CPU - generates the greatest amount of heat
Hard drives and memory are susceptible to damage from extreme heat as well
Case fans - are large, square fans that snap into a special bracket on the case, providing extra cooling for key components
Molex connector - which easy to plug in
Drive Bays - cases equipped with special areas to hold storage drives
there two types of bays
external and internal
external bays
have opening that enable them to be accessed from outside the case
exp; floppy disk drives and CD-ROM
two widths - 3.5 and 5.25 inches
Internal bays - are used for components like hard drive that you don't need to access once they're installed
Internal bays - is concealed entirely within the system unit