Intermediate Notes - 1.2.1 Systems Software - OCR Computer …

The term ‘operating system’ refers to a collection of programs that provide an i nterface between the user and computer . Operating systems enable the user to communicate with the computer …

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What is an operating system?

An Operating System is a program that acts as an intermediary between a user of a computer and the computer hardware. What is an Operating System (OS)? An Operating System is a program that acts as an intermediary between a user of a computer and the computer hardware. What will we think of the OS as in this course? ...

What is the difference between system program and application program?

System program consists of compilers, loaders, editors, OS, etc. The application program consists of business programs, database programs. Every computer must have an operating system to run other programs. The operating system coordinates the use of the hardware among the various system programs and application programs for various users. ...

What are the components of operating system?

Operating system as User Interface – Every general-purpose computer consists of the hardware, operating system, system programs, and application programs. The hardware consists of memory, CPU, ALU, and I/O devices, peripheral device, and storage device. System program consists of compilers, loaders, editors, OS, etc. ...

What does OS do in a multi-programming environment?

In a multi-programming environment, the OS decides the order in which processes have access to the processor, and how much processing time each process has. This function of OS is called Process Scheduling. An Operating System performs the following activities for Processor Management. ...

How does a computer programmer program a machine?

At one time, the computer programmer had at their disposal a basic machine that interpreted, through hardware, certain fundamental instructions. The programmer would program the computer by writing a series of ones and zeros (machine language), and place them into the memory of the machine. ...

What is a computer system course?

This course is a study of computer systems, computer organization, computer subsystems, and operating systems. This course examines CPUs, motherboards, basic input/output systems, memory subsystems, bus structures, expansion cards, ports, connectivity, interfaces, data storage subsystems, and multimedia interface devices. ...