CMOS & External Memory
Hi everyone,
haiz...there is very sad and happy today.
Sad= This is the last post.
Happy= Finally I finished my mission already.
Anyway, hope all my post will help your guys something.
Let's start it together :)
What is CMOS?
CMOS actually is Complementary Metal Oxide Semiconductor.
-It requires very little power to retain its contents.
-It's able to store vital data of the computer system even when the power supply is turned off.
-It can hold the data involve floppy,hard-disk drives.
-It also able to kept the data of display system.(eg. date, time, system setup parameters.)
I believe that your guys have some idea with the external memory, right?
Normally, external memory can be separate with 3 common type:
1)Magnetic Disk
●Substrate used to be aluminium
●Improve surface uniformity
●Reduction in surface defects
●Lower flight heights
●Better stiffness and shock/damage resistance
Two types of the Magnetic Disk:
RAID(Redundant Array of Independent Disks)
-Lastest
-6 levels in common use but they don't imply hierarchical relationship.
-3 common characteristics:
a)Set of physical disks viewed as single logical drive by O/S
b)Data distributed across physical drives
c)Can use redundant capacity to store parity information
-Removable (Floppy)
2)Optical Storage
-CD-ROM
-CD-Recordable(CD-R)
-CD-R\W
-DVD
-blu-ray
3)Magnetic Tape
●Serial access
●Slower
●Cheapest
●Backup and archive
Read and Write Mechanisms
⊕Record & retrieval though conductive coil which called a head
⊕During read/ write process, the head is stationary and the platter will rotates.
Characteristics
Head motion: Fixed (rare) or movable head
Disk portability: Removable or fixed (non-removable)
Magnetized-Coating Sides: Single or Double Sided
Platters: Single or Multiple platter
Head Mechanism
-Contact(Floppy)
-Fixed gap
-Aerodynamic
@The End@
Hope your guys will like my tutorial of Memory System Architecture.
If there got any problem or wrong, please kindly comment in my posted. I am very appreciated your suggestion.Thank you.
Written by--®æŋ
haiz...there is very sad and happy today.
Sad= This is the last post.
Happy= Finally I finished my mission already.
Anyway, hope all my post will help your guys something.
Let's start it together :)
What is CMOS?
CMOS actually is Complementary Metal Oxide Semiconductor.
-It requires very little power to retain its contents.
-It's able to store vital data of the computer system even when the power supply is turned off.
-It can hold the data involve floppy,hard-disk drives.
-It also able to kept the data of display system.(eg. date, time, system setup parameters.)
I believe that your guys have some idea with the external memory, right?
Normally, external memory can be separate with 3 common type:
1)Magnetic Disk
●Substrate used to be aluminium
●Improve surface uniformity
●Reduction in surface defects
●Lower flight heights
●Better stiffness and shock/damage resistance
Two types of the Magnetic Disk:
RAID(Redundant Array of Independent Disks)
-Lastest
-6 levels in common use but they don't imply hierarchical relationship.
-3 common characteristics:
a)Set of physical disks viewed as single logical drive by O/S
b)Data distributed across physical drives
c)Can use redundant capacity to store parity information
-Removable (Floppy)
2)Optical Storage
-CD-ROM
-CD-Recordable(CD-R)
-CD-R\W
-DVD
-blu-ray
3)Magnetic Tape
●Serial access
●Slower
●Cheapest
●Backup and archive
Read and Write Mechanisms
⊕Record & retrieval though conductive coil which called a head
⊕During read/ write process, the head is stationary and the platter will rotates.
Characteristics
Head motion: Fixed (rare) or movable head
Disk portability: Removable or fixed (non-removable)
Magnetized-Coating Sides: Single or Double Sided
Platters: Single or Multiple platter
Head Mechanism
-Contact(Floppy)
-Fixed gap
-Aerodynamic
@The End@
Hope your guys will like my tutorial of Memory System Architecture.
If there got any problem or wrong, please kindly comment in my posted. I am very appreciated your suggestion.Thank you.
Written by--®æŋ
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