Computer Science - Unit 2

Decimal

Decimal

Base-10 system

Binary

Base-2 system

Hexadecimal

Base-16 system

Logic error

A mistake in the algorithm or program that causes it to behave incorrectly or unexpectedly

Syntax error

A mistake in the program where the rules of the programming language are not followed

Run-time error

A mistake in the program that occurs during the execution of a program

Overflow error

When programs use numbers outside of the fixed number of bits

Character encoding

how text is represented as digital data

ASCII

Represent text in computers and other devices in American English

Unicode

an international encoding standard that is used by many languages

Unicode bit

16-bit

ASCII bit

8-bit

Amplitude

How high or low a snapshot is at a certain time

Snapshots

A computer breaking down sound into tiny segments

Sampling

The process of taking snapshots

Sampling rate

Number of snapshots taken per second

Higher sampling rate

Sound captured in higher detail

Bit Depth

number of bits used to represent each snapshot

Metadata

Data that describes other data

Examples of metadata

size of image, number of colors, resolution

8 bits per

1 byte

Binary is made up of

Bits

Bits are either

1s or 0s

Bytes

Standard unit of measurement for representing data size and storage capacity

Digital data

represented using discrete values with binary digits

Analog data

represented using continuous values with physical quantities

Digital data is

Resistant to degradation

Analog data is

Vulnerable to degration