Unit 4 Software

provides the services that the computer requires such as the operating system or utility software

provides services that the user requires

to manage computer processes and memory along with hardware and software

input/output operations user can communicate with the computer error handling loading and running of programs managing of security

they are run on the operating system

it is run on the firmware

the hardware

provides basic machine instructions that allow the hardware to function and communicate with software

a signal sent from a device or from software to the microprocessor.This stops the microprocessor to stop what it is doing so that it can service the interrupt.

it allows computers to carry out many task or to have several windows open at the same time

can be the pressing of a key or moving the mouse

they enable a programmer to work quickly and dont require them to have prior knowledge of the hardware and instruction set

easier to read and understand since language is closer to english can be written in shorter time debug at the development stage easier to maintain once in use

they can refer to machine code or assembly language.It requires knowledge of specific architecture and hardware of a certain computer

can make use of special hardware includes special machine dependent instructions code doesnt take up much space in memory can write code that performs a task very quickly

takes longer to write and debug more difficult to understand

programs can be larger programs can take longer to execute programs may not be able to make use of special hardware

it is a form of low level languages that use mnemonics

it translates the assembly language into machine code

it translates high level languages. it translates the whole code at once before executing it

it translates high level languages. it translates and executes the code line by line

it provides an error report for the whole code

it stops execution when an error is found

when developing a program