Computer systems, subsystems and decomposition Flashcards
What is a computer system made up of?
Softwaware, data, hardware, communications and people
What is top-down design?
Breaking down a computer system into a set of sub-systems , then breaking each sub-system into a set of smaller sub-systems until each performs a single action
What is a structure diagram used for?
It shows the hierarchy of a computer system in a diagramatical way. Each level gives a more detailed breakdown of the system into sub-systems
What is a flowchart used for?
It represents the algorithm that shows how a system or sub-system works.
Pseudocode is
A way of showing an algorithm using English-like words and mathematical operators
What is a library routine?
A set of programming instructions for a given task that is already available for use.
What is a sub-routine?
A set of programming instructions for a given task that performs a sub-system, not the whole system.
