vocabulary Flashcards
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 and while
Selection
A choice of which set of code to follow is dependant on a true or 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
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 straps and BIOS
Volatile
Data is lost when the machine is turned off
CAD
It is the use of computers to help create technical drawings or technical illustrations.
Advantages- much cheaper than building a prototype , easy to edit
