1001
Space
Earth
Nature
History
Human World
Science and Technology
Chemistry
Materials
Force and Energy
Heat and Light
Electricity and Magnetism
Industry
Machines
Cars and Trucks
Railways
Ships
Aircraft
Fishing and Agriculture
Undersea Exploration
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What is a CD-ROM?
Cd-rom stands for 'compact disk, read-only memory'. It is a computer-storage device that can hold up to 600 million individual pieces of information, including text, sound, still pictures, video, and animation.
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