AP Computer Science Principles Unit 1 Test 2024

________ refers to the symbols that represent people, events, things, and ideas. Data can be a name, a number, the colors in a photograph, or the notes in a musical composition. - Data ____________refers to the form in which data is stored, processed, and transmitted - Data Representation the process of converting text, numbers, sound, photos, and video into data that can be processed by digital devices - Digitization 0s and 1s used to represent digital data - binary digits 0 or 1 used in digital representation of data - bit a named collection of data that exits on a storage medium, such as a hard disk, CD, DVD, or flash drive - digital file consists of numbers that can be used in arithmetic operations - numeric data binary number system has only two digits: - 0 & 1 composed of letters, symbols, and numerals that are not used in calculations - character data examples of character data - name, address, and hair color another name for character data - text How many bits does ASCII require for each character? - 7 bits uppercase A in ASCII - 1000001 How many bits does extended ASCII require for each character? - 8 bits Extended ASCII provides code for _____ characters. - 256 How many bits does Unicode require for each character? - 16 bits Unicode provides code for _____ characters. - 65,000 Unicode is helpful for __________________. - alphabets in multiple languages ASCII codes are used for ___________ such as SSN, and phone numbers. - numerals plain unformatted text is sometimes called ______________. ends in a file name - ASCII text ASCII text files contain no _____________. - formatting Microsoft Word creates _____ iWork creates ________ - bit is an abbreviation for _____ _____. - binary digit You can use a scanner to ________ a document - digitize There is __ bits in a byte - 8