Computing Flashcards
(18 cards)
Algorithm
A set of instructions that achieve a task.
Sequence
Following instructions one after the other.
Variable
A named container for a value (which can be inspected or altered by the program).
Iteration
A repeated set of instructions – common loops include forever, while true, while.
Selection
A choice of which set of code to follow is dependent on a true of false question – common selections are “if then else”, “when..do”.
Program
A set of algorithms that have been created to solve a problem – commonly known as apps (application software).
Input
A method of entering data onto a computer system, usually with an input device, such as a keyboard or mouse.
Output
A method of displaying information to a user e.g. a screen.
LED
Light emitting diode, a light. They now come in several different colours including red, yellow amber, white, green and blue.
CPU
The central processing unit – every command passes through the CPU.
RAM
Random access memory, very fast, volatile data storage, contains the operating system, current programs and data.
Volatile
Data is lost when the machine is turned off.
BIOS
Basic input and output system.
Motherboard
A circuit board that connects all of the other components.
HTML
Hypertext markup language – used to create webpages.
Web browser
Software that interprets HTML to reproduce a webpage.
CSS
Cascading style sheet, used to centralise the format/style of a website.
ROM
Read only memory. Non-volatile data.
