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CD1 abbreviation of "compact disk," a round, flat disk that sound can be recorded on and that people can listen to. Other types of information can be stored on a CD also. The information on a CD is in the same form as the information stored in a computer. It is digital information. You play a CD on a special device that has a laser in it that can "read" the information on the CD.
compact disk A compact disk is a round, flat disk that sound can be recorded on and that people can listen to. Other types of information can be stored on a compact disk also. We often use the abbreviation "CD" when we talk about compact disks. The information on a CD is in the same form as the information stored in a computer. It is digital information. You play a CD on a special device that has a laser in it that can "read" the information on the CD.
digital When we say that a clock or watch is digital, we mean that it shows the time using a row of numbers. When it is ten minutes after twelve o'clock, for example, a digital clock will show 12:10. On a digital clock, the hour is shown by the numbers on the left, and the minutes are shown by the numbers on the right. There is a mark with two dots between the hour and the minutes. This mark is called a colon. [3 definitions]
digital citizen a person who uses the internet to connect with society and the world. Digital citizens often use the internet to do things like getting and sending messages, posting or displaying information, playing games, or shopping.
digital clock A digital clock is a kind of clock that shows the time with just a row of numbers. A digital clock does not have hands that go around like an older kind of clock.
electronic If a device or piece of equipment is electronic, it uses electricity in a complex way using very tiny parts. Computers, cell phones, and digital cameras are electronic devices.
set When you set a clock, you put the hands of the clock where they should be in order to show the time, or, with a digital clock, you choose the correct numbers to show the time. When you set an alarm, you choose the time when you want the alarm to ring. [1/17 definitions]
yellow pages A "yellow pages" is a book or part of a book that is made up of lists of a businesses along with their addresses and telephone numbers. The pages are, of course, yellow. The businesses are grouped together according to what type of business they are--for example, restaurants, grocery stores, law offices, or insurance companies. Nowadays, people can find a digital form of yellow pages online.