Intro to Coding - Internal Data Representation

Using the conversion chart, complete these sentences with the drop-down menu. The binary number for 6 is ? The decimal number for 00001000 is ?

1. 00000110 2. 8

Using the drop-down menu, complete the sentence about the hexadecimal numbering system. The hexadecimal numbering system uses ? known as ? which consist of ?

1. 16 symbols, hex digits, numbers and letters

What information do you need to convert from one number system to another? Check all that apply. a conversion table knowing whether the value is text or numeric knowing whether the text is upper- or lowercase the binary equivalent of uppercase letters

1. a conversion table 2. knowing whether the value is text or numeric 3. knowing whether the text is upper- or lowercase

Using the drop-down menu, complete the sentence about the binary numbering system. The binary numbering system is a ? using the digits ?

1. base-2 numbering system, 0 and 1

Using the drop-down menu, complete the sentence about the octal numbering system. The octal numbering system is a ? using the digits ?

1. base-8 number system, 0, 1, 2, 3, 4, 5, 6, and 7

Using the drop-down menu, choose the correct answer. This number system uses 8 symbols. The symbols are 0 through 7. It is the ? number system. This number system uses 10 symbols known as digits. The symbols are 0 through 10. It is the most common number system. It is the ? number system. This number system uses two symbols. The symbols are 0 and 1. It is known as the ? number system. This number system uses 16 symbols of numbers and letters. It is known as the ? number system.

1. octal 2. decimal 3. binary 4. hexadecimal

Why is it beneficial to convert to a decimal numbering system when working in a programming language? Working in the binary number system makes it easier to spot incorrect numeric data values. The decimal number system is easier to read and understand. The decimal number system takes up less space. The decimal number system stores numbers in bits.

2. The decimal number system is easier to read and understand.

Which statements correctly describe computer numbering systems? Check all that apply. Computer numbering systems assign meaning to a pattern of on or off bits. In electronic form, the data is made up of a string of individual on and off switches known as bits. Strings of 0 and 1 are a preferred mode. Programmers use binary, octal, decimal, and hexadecimal forms of notation.

1. Computer numbering systems assign meaning to a pattern of on or off bits. 2. In electronic form, the data is made up of a string of individual on and off switches known as bits. 4. Programmers use binary, octal, decimal, and hexadecimal forms of notation.

Use the table on the right to convert from hexadecimal to binary. The binary value of hexadecimal D is 1101. The binary value of hexadecimal 9 is 1000. The binary value of hexadecimal C is 1110. The binary value of hexadecimal F is 17.

1. The binary value of hexadecimal D is 1101.

Identify the reasons that numeric data representation is important to computer programmers. Check all that apply. The computer reads data in binary form. Using a number system that makes sense to a programmer makes it easier to track the data. Number systems are used all around the world for important work. The ability to represent data in 0s and 1s is essential to computing.

1. The computer reads data in binary form. 2. Using a number system that makes sense to a programmer makes it easier to track the data. 4. The ability to represent data in 0s and 1s is essential to computing.

Use the table on the right to convert from decimal to binary. The decimal value of binary 1000 is 10. The decimal value of binary 1100 is 12. The decimal value of binary 1001 is 11. The decimal value of binary 1110 is E.

2. The decimal value of binary 1100 is 12.

Use the table on the right to convert from binary to decimal. The binary value of decimal 10 is A. The binary value of decimal 13 is 1001 The binary value of decimal 15 is 1111. The binary value of decimal 14 is E.

3. The binary value of decimal 15 is 1111.

Use the table on the right to convert from decimal to octal. The octal value of decimal 12 is 13. The octal value of decimal 9 is 1001. The octal value of decimal 13 is 15. The octal value of decimal 10 is A.

3. The octal value of decimal 13 is 15.

Use the table on the right to convert from decimal to hexadecimal. The hexadecimal value of decimal 12 is F. The hexadecimal value of decimal 9 is 1001. The hexadecimal value of decimal 9 is 11. The hexadecimal value of decimal 10 is A.

4. The hexadecimal value of decimal 10 is A.

There are many reasons to convert to the decimal numbering system. Select the best answer. When checking numeric values in computer memory, decimal makes sense because you use decimal numbering every day. When checking words in computer memory, decimal makes sense because you use decimal numbering every day. When comparing values in a computer program, decimal numbering makes sense because it is always shorter than hexadecimal. When checking words in computer memory, decimal numbering makes sense because it is easier than hexadecimal.

1. When checking numeric values in computer memory, decimal makes sense because you use decimal numbering every day.

Use the drop-down menu to complete the sentences about computer communication. Computer data is comprised of a string of on and off switches called ? Computers break data down into ?

1. bits 2. on and off bits

Use the drop-down menu to correctly identify the numbering system. This numbering system uses 8 symbols: ? This numbering system uses 0 and 1: ? This numbering system uses 16 symbols: ? This numbering system uses 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9: ? This numbering system uses 2 symbols: ? This numbering system uses 10 symbols: ? This numbering system uses numbers and letters: ? This numbering system uses 0, 1, 2, 3, 5, 6, and 7: ?

1. octal 2. binary 3. hexadecimal 4. decimal 5. binary 6. decimal 7. hexadecimal 8. octal