What is the information technology knowledge test in senior high school?

High school information technology knowledge test content: 1, information has a carrier: information is expressed in words; Radio and television are attached to electromagnetic waves, and information is expressed through sound and video. The same information can be attached to different carriers. The message to get up can be to press the alarm clock or someone else.

Text information can be printed on paper, engraved on stone tablets and recorded in the external memory of the computer. Because of the carrier dependence of information, information is also storable, transferable and convertible.

2. Information has * * * enjoyment: information can be reused many times and will not be lost or disappeared. For example, the live broadcast of the Olympic Games allows the whole world to receive live broadcast information at the same time and learn about the competition.

3. Information has timeliness: information often only reflects the state of things at a certain moment and will change with time.

4. Information is valuable: As a special resource, information has its corresponding application value. For example, "After three months of war, a letter from home is worth Wang Jin".

5. Relativity of information value: for different information recipients, the value of information is different, which is closely related to the needs and quality of information recipients.