Number Bases and Information Units

Which audio format is known for being uncompressed and commonly used on Windows systems?

What is the primary function of data compression techniques?

Which compression technique replaces sequences of identical values with a single value and a count of repetitions?

Which audio format is most commonly associated with digital media such as MP4 files?

What characteristic defines MP3 as an audio format?

What is the base-2 number system commonly known as?

What operation is commonly used for converting a decimal number to binary?

How many bits are there in one byte?

Which of the following is a common character encoding for basic English characters?

What is the main purpose of binary arithmetic?

Which of the following image formats is suitable for graphics with sharp lines and text?

What is the smallest unit of information called?

Which of the following correctly defines a terabyte (TB)?

Number Bases

Number bases represent numbers differently.
Decimal (base-10) uses digits 0-9.
Binary (base-2) uses 0 and 1.
Hexadecimal (base-16) uses digits 0-9 and A-F.
Octal (base-8) uses digits 0-7.
Each base has a place value system.

Converting Between Number Bases

Converting between bases involves representing values in a different base.
Methods include division and modulo, repeated multiplication, and conversion tables.

Units of Information

Information is measured using powers of 2.
Bit is the smallest unit (0 or 1).
Byte is a group of 8 bits (often representing a character).
Kilobyte (KB), Megabyte (MB), Gigabyte (GB), and Terabyte (TB) are larger units of information.

Binary Arithmetic

Binary arithmetic uses binary numbers for calculations.
Operations like addition, subtraction, multiplication and division use bitwise and logical operators.

Character Encoding

Character encoding represents characters as bit sequences.
ASCII (7-bit) encodes basic characters.
Unicode (multi-byte) represents many characters from various languages.

Representing Images

Images are represented by storing pixel color data in a grid.
JPEG is a compressed image format suitable for photos.
PNG is a lossless format for graphics with sharp details.
BMP is an uncompressed format primarily used in Windows.

Representing Sound

Sound is represented digitally by converting analog sound waves to digital samples.
Each sample represents amplitude at a specific point in time.
MP3 is a compressed audio format.
WAV is an uncompressed audio format.
AAC is another compressed audio format.

Data Compression

Data compression reduces data size without significant information loss.
Run-length encoding (RLE) replaces repeated values with a count.
Huffman coding assigns shorter codes to frequent symbols.

This quiz covers various number bases such as decimal, binary, hexadecimal, and octal, along with methods for converting between them. You'll also learn about units of information, binary arithmetic, and character encoding. Test your knowledge on how these concepts interrelate in computing.