Hardware

  first we got to know some basics things you can touch it (hardware) and things you can’t (software) like Application- 

.Software 

Database Collection of interrelated data like course- catalogs 

Networks:

Network infrastructure, communication media-

 People-

.the users 

Procedure for using, operating, and maintaining an information system-

.the information technology used in certain business through building information system

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and in next we got some examples obout input and output to clarify the difference between them

.output like monitor and printer. -input like kyboard and mouse-

.input and output devices (buttons and ports)-

like power button and HDMI port, but the specail one is the USB port

you can plug in a whole range of periphral devices including scanners, printers, kybords etc

  we lost many ports when the USB is back

aloso we took a wireless things like wifi and 

wireliss keyboards

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ram - processor - mother board - harrd drive - battery\power supplpy unit - 

CPU central processing - 

.heatsink (to prevent the CPU from overheating) 

.now this is the internal hardeare component

?but what is CPU-

.the primary component of a computer that acts as it’s control center (the brain of the computer)

CPUs now can have multiple cores also can support hyper- threading

where a single core will present itself as multiple corers to a computer’s operating system

Systems on a Chip ( SoaC ) are when a CPU and more are all interconnected at once rather than attached to a motherbord 

 next we took what it’s RAM (Random Access Memory)-

 Circuit board with chips that slides into a slot on the motherboard

-:it characterized by

short-term memory

can’t store files

cleared when you turn off computer

fast memory

the chips store data

There are some points that must be mentioned-

GHz is the number of operations a CPU can perform per second ( in billions )

.MHz (megahertz) = 1 million beats in one secand 

.GHz (gegahertz) = 1billion beats in one secand

Hard drive -

.The benefit of the HDD is to store data by receiving it from RAM

-:it characterized by

long term memory 

.store the data when the computer off

.can store 2TB 

.have moving particles

.power is only needed to read or change the data 

 And we knew how the HDD works from the inside

 the next is flesh memory-

SDD(solide state disk)

  it’s faster and more durable , smaller about 2.5 inch and much faster than HDD, Flash memory also 

exists in the form of USB sticks so you can use it in multiple devices and tools

BUT it more expensive and heve a finite number of writes and less in storage from HDD

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.Memory Types Funneling- 

There is a tradeoff between space, money, and speed of data transfer 

.Data is pushed "down the funnel" to your CPU

.Theoretically, the CPU never has to wait for data to crunch

.There is a tiny amount of memory ( bytes ) called registers where numbers are stored for operations

.Memory at the bottom is more expensive

.Disk is important for the long - term storage

.AM is important as it stores programs you use simultaneously

L3 , L2 , L1 cache are on the motherboard Data is pushed " down the funnel " to your CPU From the hard drive, data first goes to the RAM

.we can liken it to the Funnel, but I like to liken it to the elevator

.And according to your ascent and descent, you decide what you count

      

By:Mohamed Mostafa mohamed-21100285