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Computer - Coggle Diagram
Computer
Host Computer 
Much more powerful
Much more expensive
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Always as a server
User can login from other client computer to use it
Mainframe
Very Large in size
Tens to Hundred CPU to operate
Mainly for Big enterprises, Bank and the government
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Personal Computer
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Price is always Affordable
According to their size:
Handheld Computer
Portable, can hold in a hand
Always have a WI-FI function
Has 3G,4G and 5G
Mainly Controlled by touch screen
Has A screen size of 1 inch to 8 inch
Tablet
Normally no keyboard, mainly touch screen
Screen size normally 7 to 10 inch
Less connection port and portable
Laptop Computer
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Smaller in size, have battery, portable
All in one , have keyboard and touch pad
Desktop Computer
Bigger in size, always put it on a desk
Must always connect to the AC power
Mainly connected with keyboard and mouse, but also have touch screen
Hard disk is always the main storage device, some also have DVD Drive
Have many connection port, can connect so many device