Software (paper 1)

• system software • application software

• operating systems • utlility software

Programs that the user requires to perform tasks such as word processing, web browser

• word processors • spreadsheets • social media apps

Programs such as operating systems which provide a user interface, or utility programs used to copy move or delete files

important fuctions - a file is written to a hard dirve or program loading into the RAM

helping configure and maintain the computer or device

• compression tools • backup software • disk clean up • disk defragmentation • antivirus

relating to operating systems and it allows the user to tell the computer what to do and shows the result after processing

• graphical user interface = windows, icons, menus • voice activation = siri, amazon alexa

• when files are saved to a magnetic hard disk they are stored in the next availiable space • this leads to files being split into fragments which take longer to access = more movement • this software puts each file back into one continguous location

• deletes temporary files • clearing cached files for web browser • removes unnecessary program files

• hardware = components of computer • firmware = low-level software to operate correctly • operating systems = acts as file management

an interrupt is a signal sent to the CPU to get it to temporarily stop the process so it can handle more urgent tasks - time sensitive and improve efficiency

• high-level language • love-level language

• a language tha thas a syntax and similar to english • it is designer to be understood by humans • eg. python • allows programmer to concerntrate on task vs computer architecture • it must then be complied or interpreted before run

• assembly code - typically used to control hardware components • heard to read but execute very quickly • eg. in embedded systems = machine code • less memory and still equivilant to high-level instructions

the binary intructions produced by the complier or interpreter - each type of processor has its own specific machine code instruction set so it will not work on another type

• complier • interpreter • assembler

• translates high-level language in one go to produce object code • exercutes faster than interpreted program • does not need to be complied again • complier can be removed once object code run • provides error report if any errors • used in C# and VB

• translates and executes high-level language one line at a time • takes more time to execute than complier • source code interpreted every time it is run • must be installed to run • stops excercution if error found • used in Python and JavaScript

converts assembly code into machine code

assembly code uses mnemonics and an assembler is still needed to make it machine code

intergrated development evironment