Chapter 6 Computer Systems

Software consists of sequences of instruction called programs that can be understood and executed by hardware.

It assists with the running or management of the computer

Software that enable the user to perform a task

It hides the complexity of the hardware.

• Memory management • File management • I/O mangement • Processor seceduling

Controling how the RAM is used

Organising the files and documents in the memory

Monitors input and output devices such as keyboards, mice etc

Performing specific tasks to assist the computer, e.g. disk defragmentation, file compression and firewalls

Compiled routines which other programs can use

Programming language translators translate all languages (e.g. Python Java, Assembly) into machine code (1s and 0s)

Translates from assembly language into machine code

Translates from high level language into machine code, all at once

Translates from high level language into machine code, line by line

Compile code which can be run as an executable on any computer

Code which is not directly executable, it will be interpreted/ ran by a Virtual Machine e.g. Bytecode

THe status of an algoritm

The act of moving from one state to another

SOmething that cayse a transition to occur between state

The responce to an evemt before a transition

A circle

A circle with an arrow coming in from the left pointing at it

A circle with a smaller circle inside it

An arrow leading to the next state from the original with the value required above or the value above slashed with what it will become