Computer Concepts

refers to the symbols that represent people, events, things, and ideas.

Data refers to the symbols that represent people, events, things, and ideas.

Data __________ refers to the form in which data is stored, processed, and transmitted.

Data becomes _______ when it is presented in a format that people can understand and use.

Digital data can be __________ that have been converted into discrete digits such as 0s and 1s. a. text b. numbers c. graphics, sound, and video d. all of the above

The process of converting information, such as text, numbers, photos, or music, into digital data that can be manipulated by electronic devices is called ___________. a. binary b. digitization c. representation d. none of the above

The 0s and 1s used to represent digital data are referred to as _________ digits

A file name extension indicates the file format.

________ data consists of numbers that can be used in arithmetic operations. a. Text b. Digital c. Numeric d. Binary

The binary number system has only two digits: 1 and 2.

The _______ number system allows digital devices to represent virtually any number simply by using 0s and 1s. a. digital b. text c. numeric d. binary

Character data is composed of letters, symbols, and numerals that are used in calculations. a. True b. False

ASCII requires __________ bits for each character. a. two b. six c. seven d. ten

Unicode uses________ bits and provides codes for 65,000 characters. a. seven b. eight c. ten d. sixteen

Plain, unformatted text is sometimes called ASCII text. a. True b. False

ASCII text files contain formatting. a. True b. False

In a formatted text file, ________ signals the beginning and end of a formatting command

All of the data stored and transmitted by digital devices is encoded as bits. a. True b. False

A group of eight bits is called a _______. a. byte b. megabit c. binary d. numeric data

Transmission speeds are expressed in _______, whereas storage space is expressed in _______. a. bits, bytes b. bytes, bits c. binary, numeric d. none of the above

Data ____________ refers to any technique that recodes the data in a file so that it contains fewer bits

Lossy compression provides a way to compress data and reconstitute it into its original state. a. True b. False

Lossy compression throws away some of the original data during the compression process. a. True b. False

Compressed files usually have ______ at the end of the file name. a. .exe b. .zip c. .txt d. none of the above

music, speech, and other sounds represented in binary format for use in digital devices. a. MIDI b. speech recognition c. speech synthesis d. Digital audio

To digitally record sound, __________ of a sound wave are collected at periodic intervals and stored as numeric data in an audio file.

Sampling _______ refers to the number of times per second that a sound is measured during the recording process. a. rate b. compression c. depth d. sound

To conserve space, applications that require highquality sound use low sampling rates. a. True b. False

Regardless of sampling rate, digital audio file size can be reduced using audio compression techniques. a. True b. False

Most music for portable media players is stored in _______ audio file formats. a. uncompressed b. compressed c. lossless d. zipped

31. Digital audio is stored in a variety of file formats, including ___________. a. WMA b. WAV c. MP3 d. all of the above

Which of the following is NOT a format that is used for digital audio? a. MP3 b. DOC c. WAV d. Ogg

A(n) _______ is software that works in conjunction with your computer's browser to manage and play audio that you are accessing from a Web page.