AQA A Level Computer Science - 4.6 Fundamentals of Computer Systems

AQA A Level Computer Science - 4.6 Fundamentals of Computer Systems with answers well explained guaranteed A+ success. Interpreter - correct answersA program for translating a high level language by reading each statement in the source code and immediately performing this action Operating system role - correct answersTo manage the hardware resources in order to provide for an orderly and controlled allocation of the processors, memories and I/O devices among the various programs competing for them and manage the storage of data. It hides the complexities of the hardware from the user. Stand-alone computer - correct answersA computer not networked, requiring its own printer and other peripherals plus its own installation of application software. System software - correct answersA program that manages the operation of a computer. Virtual machine - correct answersThe apparent machine that the operating system presents to the user, achieved by hiding the complexities of the hardware behind layers of operating system software. Operating System - correct answersAn operating system is a program or suite of programs that controls the entire operation of the computer Applications Packages - correct answersA program or set of instructions designed to make use of the the computer for a specific purpose. Allows the user to carry out tasks. It makes the computer do something that is useful for the user Off the Shelf Software - correct answersSoftware available for immediate use Custom Written Software - correct answersSoftware specifically written to solve a particular problem Common Applications Packages - correct answersStock Control, Order Processing ,Payroll ,Process Control, Point of Sale System , Marketing ,Computer Aided Design ,Computer Aided Manufacture Generic Applications Software - correct answersSoftware that has a relatively large number of different uses. Tailored to the user's specific need rather than the task. Word Processor, Spreadsheet ,Desktop Publishing Presentation software ,Drawing packages Applications Software - correct answersProgram or programs that do a task that would have to be carried out even if there was no computer Applications Package - correct answersAn applications program and its associated documentation Operating Systems (OS) - correct answersProvides a platform on which applications can run, Control the hardware and manages hardware resources, Provides an interface between user and computer , Provides utility applications ,Provides security for the data on the machine Utility Programs - correct answersShort programs that carry out tasks within the computer that are necessary for the smooth running of the computer. Data transfer programs ,Automatic backup utility ,Anti-virus software ,Compression software Compiler - correct answersA program that translates a high level language into machine code by translating all of the code at one time Assembler - correct answersA program that translates a program written in assembly language into machine code