第一章題目講解

Q : Why is Computer Literacy Vital in Today's World?

Ans : Computer literacy, or digital literacy, involves having current knowledge and understanding                      of computer and their uses. The requirements that determine computer literacy change as                              technology changes. As computers become more a part of everyday life, many people believe that                computer literacy is vital  to success.

Q : What is a Computer, and What is the Relationship between Data and Information?

Ans : A computer is an electronic device, operating under the control of instructions stored in its own                     memory, that can accept data, process the data according to specified rules, produce results, and store         the results for future use. Data is a collection of unprocessed items, which can include text, numbers,             images, audio, and video. Information conveys meaning and is useful to people.

Q : What Are the Advantages and Disadvantages That User Experience When Working with                 Computer?

Ans : A user is anyone who communicates with a computer or utilizes the information it generates.                          Computers have the advantages of speed, reliability, consistency, storage, and communications. They            perform operations at incredibly fast speeds, are dependable and reliable, consistently generate error-            free results, can store enormous amounts of data, and can share processing with other computers.                  Disadvantages of computers relate to health risks, tje vioation of privacy, public safety, the impact on            the labor force, and the impact on the environment.

Q : What Is a Network, and What Are Its Benefits?
Ans : A network is a collection of computers and devices connected together, often wirelessly, via                        communications devices and transmission media. Network allow computers to share resources, such            as hardware, software, data, and information. Sharing resources saves time amd memory. The world's          largest computer network is the Internet.

Q : What is Role of Each Element in an Information System?

Ans : An information system combines hardware, software, data, people, and procedures to produce                  timely and useful information. People in an information technology (IT) department develop procedures          for processing data. Following these procedures, people use hardware and software to enter the data            into a computer. Software processes the data and directs the computer hardware to store changes on            storage media and produce information in a desired form.