computing revision Flashcards
CAD
the use of computers to help create technical drawings/ illustrations
CAM
the use of machines to make products
Text-color
determines the colour of the font
Background-color
Background-color determines the colour of the background can be specified as a named colour (e.g. red) or as red/green/blue in hex 6 digit number (e.g. A6F2CC)
Text-align
justifies the text
Float (left or right)
positions the div element to the right or left of the surrounding element
Border
Border colours and styles the border
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
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. They now come in several different colours including red, yellow, amber, white, green & 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
ROM
Read only memory, non-volatile memory, contains the boot strap and BIOS
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 webpage
CSS
Cascading style sheet used to centralise the format/style of a website
