Unit 1 Vocabulary

Computer Science

Using technology to solve human problems.

print

Command displays text and numbers on the screen.

compiler

Translates code to machine language.

computer

An electronic device consisting of hardware and software.

CPU

Central Processing Unit - carries out program instructions.

hardware

The physical machine; anything you can touch.

input

The user sends information to the computer.

main memory

Short term memory; temporary-power off, all information is lost.

String

Lets the user type in letters, numbers and words. Not used for calculations.

program

Instructions that a computer follows, written in code.

secondary memory

Long term memory; storage.

software

Programs that run on hardware.

escape characters

Special characters marked with the \
\n - new line
\t - tab
\" - prints a quote
\\ - prints a slash

comment

Notes in computer code for the programmer - the computer ignores them. Marked in Python with a #.

output

Translates digital information to information humans can use.

variable

A name for a spot in the computer's memory.

int

Function that translates Strings to integer numbers.

str

The str function tells Python to handle the value in the ( ) as a String, not as a number.

analog

Data and information in the real world.

digital

Numeric data stored in a computing device.

binary

A number system based on two.

decimal

A number system based on ten, the number system we normally use.