SPECIFICATION PAGE 1
Common topics notes
NAVIGATION SYSTEM
This is the term used to plan a route from one place to another. For websites, it means a method has
been provided for you to jump from one webpage to another.
'Menus' are very popular navigation method. A 'Menu' may be made of graphical images such as the
ones you see on the left. Another very popular form of navigation is the text 'hyperlink' often
embedded in the main text but coloured differently to give you a clue it is there.
FEATURES
1.Turn-by-turn directions
2.Route planning and waypoints
ADVANTAGES
In-car satnavs are commonly used instead of traditional maps to help direct you
along the fastest route on your car journey.
Advantages of DVDs Disadvantages of DVDs
Very large storage capacity 4.7-9 Gb DVDs do not work in CD drives
Sound and picture quality is excellent,
making them ideal for storing films with There is no single standard of DVD
video and sound.
DVDs are now mass produced so they are They can be easily damaged by breaking or
relatively cheap scratching
DVD drives can read CDs
Small and portable Fairly fragile, easy to snap or scratch
Smaller storage capacity than a hard drive
Very cheap to produce
or DVD
Most computers can read CDs. If there is
no CD drive, a DVD drive can usually read Slower to access than the hard disk.
them
Fairly fast to access the data - quicker than
magnetic tape
Advantages of magnetic tape Disadvantages of magnetic tape
Probably the cheapest form of storage per Serial access so can be quite slow to
megabyte of storage access data
Can store large amounts of data - up to 1 Need a special piece of equipment to
, Terabyte per tape cartridge record and read the data on the tape
ADVANTAGES DISADVANTAGES
Ad
Disadvantages of Blu-ray
vantages of Blu-ray
Very large storage capacity 25-50 Gb Blu-ray does not work in DVD or CD drives
UNDERSTANDING OF OPERATION SYSTEM
ADVANTAGES OF SIGLE USER AND MULTI TASKING
Time saving.
High productivity in less time frame.
Less memory is used for performing multiple tasks.
ADVANTAGES OF MULTITASKING
True multitasking is the capable for executing and process multiple tasks concurrently without taking
delay instead of switching tasks from one processor to another processor.
OPEARION SYSTEM PERFORMANCE FACTOR
HARDWARE GACTORS= LIMITED RAM CAPACITY, LIMITED CPU SPEED, SLOW HARD DISK
READ/WRITE.
MALWARE=SPYWARE, WORMS, VIRUS
Common topics notes
NAVIGATION SYSTEM
This is the term used to plan a route from one place to another. For websites, it means a method has
been provided for you to jump from one webpage to another.
'Menus' are very popular navigation method. A 'Menu' may be made of graphical images such as the
ones you see on the left. Another very popular form of navigation is the text 'hyperlink' often
embedded in the main text but coloured differently to give you a clue it is there.
FEATURES
1.Turn-by-turn directions
2.Route planning and waypoints
ADVANTAGES
In-car satnavs are commonly used instead of traditional maps to help direct you
along the fastest route on your car journey.
Advantages of DVDs Disadvantages of DVDs
Very large storage capacity 4.7-9 Gb DVDs do not work in CD drives
Sound and picture quality is excellent,
making them ideal for storing films with There is no single standard of DVD
video and sound.
DVDs are now mass produced so they are They can be easily damaged by breaking or
relatively cheap scratching
DVD drives can read CDs
Small and portable Fairly fragile, easy to snap or scratch
Smaller storage capacity than a hard drive
Very cheap to produce
or DVD
Most computers can read CDs. If there is
no CD drive, a DVD drive can usually read Slower to access than the hard disk.
them
Fairly fast to access the data - quicker than
magnetic tape
Advantages of magnetic tape Disadvantages of magnetic tape
Probably the cheapest form of storage per Serial access so can be quite slow to
megabyte of storage access data
Can store large amounts of data - up to 1 Need a special piece of equipment to
, Terabyte per tape cartridge record and read the data on the tape
ADVANTAGES DISADVANTAGES
Ad
Disadvantages of Blu-ray
vantages of Blu-ray
Very large storage capacity 25-50 Gb Blu-ray does not work in DVD or CD drives
UNDERSTANDING OF OPERATION SYSTEM
ADVANTAGES OF SIGLE USER AND MULTI TASKING
Time saving.
High productivity in less time frame.
Less memory is used for performing multiple tasks.
ADVANTAGES OF MULTITASKING
True multitasking is the capable for executing and process multiple tasks concurrently without taking
delay instead of switching tasks from one processor to another processor.
OPEARION SYSTEM PERFORMANCE FACTOR
HARDWARE GACTORS= LIMITED RAM CAPACITY, LIMITED CPU SPEED, SLOW HARD DISK
READ/WRITE.
MALWARE=SPYWARE, WORMS, VIRUS
