Fundamentals of Data Representation

Question 1

Binary

Answer 1

The language of the computer, consisting of 0s and 1s.

Question 2

Bits

Answer 2

Individual units of binary, represented as 0 or 1.

Question 3

Real numbers

Answer 3

Positive or negative numbers, including fractions and numbers with infinite decimal expansions.

Question 4

Rational numbers

Answer 4

The ratio between two integers, can be written as a fraction or decimal.

Question 5

Irrational numbers

Answer 5

Numbers with infinite decimal expansions that cannot be represented as fractions.

Question 6

Ordinal numbers

Answer 6

Numerical positions used for ordering, such as in enumeration or array pointers.

Question 7

Hexadecimal

Answer 7

A number system with 16 digits (0-9, A-F), used as a shorthand for binary.

Question 8

ASCII

Answer 8

A character encoding standard that assigns binary values to characters.

Question 9

Nibble

Answer 9

A group of 4 bits.

Question 10

Byte

Answer 10

A group of 8 bits.

Question 11

Kilobyte

Answer 11

1024 bytes.

Question 12

Megabyte

Answer 12

1024 kilobytes.

Question 13

Gigabyte

Answer 13

1024 megabytes.

Question 14

Terabyte

Answer 14

1024 gigabytes.

Question 15

Petabyte

Answer 15

1024 terabytes.

Question 16

Real number example

Answer 16

A number like -3 or 7.

Question 17

Rational number example

Answer 17

A fraction like 1/2 or 3/4.

Question 18

Irrational number example

Answer 18

A number with infinite decimal places, like Pi.

Question 19

Ordinal number example

Answer 19

The position of a value, like the alphabetical order of characters.

Question 20

Hexadecimal example

Answer 20

A number in base 16, like DF.

Question 21

Binary to hex conversion

Answer 21

Split the 8-bit binary into 2 nibbles, convert each nibble to denary, then to hex.

Question 22

Hex to binary conversion

Answer 22

Split the hex into 2 characters, convert each character to denary, then to binary.

Question 23

Denary to hex conversion

Answer 23

Convert the denary to binary, then follow the binary to hex method.

Question 24

Hex to denary conversion

Answer 24

Multiply the first hex digit by 16, then add the second digit.

Question 25

Data types

Answer 25

Different types of data that can be stored and processed by computers.

Question 26

ASCII value

Answer 26

The binary value assigned to a character in the ASCII encoding standard.

Question 27

Binary error

Answer 27

Errors that can occur when binary numbers are too long.

Question 28

Binary representation

Answer 28

The representation of data using only 0s and 1s.

Question 29

Binary conversion

Answer 29

The process of converting data to binary.

Question 30

Binary decoding

Answer 30

The process of converting binary back to its original form, such as text.