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11月18日 READING: Types of computerReading: types of computer
Types of computer Notes
Mainframe : Large, powerful,expensive.
: Multi-user system- used by many people at the some time.
: The most powerfulmainframes are called supercomputers.
Minicomputers : Used like mainframes.
Not as big, powerful,or expensive as mainframes.
Less common now because microcomputers have improved.
Microcomputer or personal : The most common type of computer.
computers (PCs) Smaller, cheaper, and less powerful than mainframes and minicomputers.
Types of portable Notes
Laptop : About the size of a small typewriter.
: Less common now because smaller and lighter portables are available.
Notebook : About the size of a piece of writing paper.
:The most common type of portable.
 Subnotebook : Not quite as big as notebooks. Can fit into a jecket pocket.
Handheld or Palmtop : Small enough to fit into the palm of one hand.
: Not easy to type with because of their size.
: Often used as personal organizers.
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Reading: Types of computer
Task 6 Study these details of different types of computer. Find the answers to these questions.Which type of computer is:
1. the most common?
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2. small enough for a pocket?
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3. the most common portable?
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4. used by many people at the same time?
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5. used like mainframes?
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6. also called a handheld computer?
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7. the most powerful?
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8. not suitable for a lot of typing?
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