2.1 flashcard

Front

Why are bits grouped together in computing?

Back

To create abstractions that can represent numbers, characters, colors, or other data.

Front

What does it mean that the same sequence of bits may represent different types of data?

Back

The meaning of a sequence of bits depends on the context in which it is interpreted.

Front

How can data be stored and used in a program?

Back

Data can be stored in variables, lists of items, or standalone constants, and can be passed as input or output to procedures.

Front

What does it mean that computing devices represent data digitally?

Back

Data is stored as electrical signals represented by bits (0s and 1s).

Front

How many bits are in one byte?

Back

8 bits.

Front

What is a bit in computing?

Back

A bit is the smallest unit of data in a computer, representing a binary value of 0 or 1.

Front

What is a byte?

Back

A byte is a group of 8 bits, commonly used to represent a single character of data.

Front

What is the purpose of hexadecimal numbers in computing?

Back

Hexadecimal numbers are used as a more human-friendly representation of binary-coded values.

Front

What is data abstraction?

Back

Data abstraction is the concept of hiding the complex reality while exposing only the necessary parts.

Front

What is a variable in programming?

Back

A variable is a storage location identified by a name that can hold different values during program execution.