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Lesson 1
Operating Systems
26
Computer Science
Graduate
09/11/2016

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Term
a component with circuitry to control the interpretation and execution of instructions.
Definition
central processing unit (CPU)
Term
a composite of two submanagers, the Job Scheduler and the Process Scheduler, which decides how to allocate the CPU.
Definition
Processor Manager
Term
a computer system that supports both batch and interactive processes.
Definition
hybrid system
Term
a computing system used in time-critical environments that require guaranteed response times, such as navigation systems, rapid transit systems, and industrial control systems.
Definition
real-time system
Term
a dedicated computer system that often is part of a larger physical system, such as jet aircraft or automobiles. Often, it must be small, fast, and able to work with real-time constraints, fail-safe execution, and nonstandard I/O devices.
Definition
embedded computer system
Term
a multifaceted technology that allows computing, data storage and retrieval and other computer functions to take place over a large network, typically the Internet.
Definition
cloud computing
Term
a node that provides to clients various network services, such as file retrieval, printing, or database access services.
Definition
server
Term
a system of interconnected computer systems and peripheral devices that exchange information with one another.
Definition
network
Term
a system that allows each user to interact directly with the operating system.
Definition
interactive system
Term
a technique that allows a single processor to process several programs residing simultaneously in main memory and interleaving their execution by overlapping I/O requests with CPU requests.
Definition
multiprogramming
Term
a type of computing system that executes programs, each of which is submitted in its entirety, can be grouped into batches, and executed without external intervention.
Definition
batch system
Term
: a composite of two submanagers, the Job Scheduler and the Process Scheduler, which decides how to allocate the CPU
Definition
processor manager
Term
a computing system used in time-critical environments that require guaranteed response times, such as navigation systems, rapid transit systems, and industrial control systems.
Definition
real-time systems
Term
: a node that provides to clients various network services, such as file retrieval, printing, or database access services.
Definition
server
Term
software instructions or data that are stored in a fixed or
Definition
firmware
Term
the place where data is stored in the computer system. Primary storage is main memory. Secondary storage is nonvolatile media, such as disks and flash memory.
Definition
storage
Term
the historical name given to a large computer system characterized by its large size, high cost, and relatively fast performance.
Definition
mainframe
Term
the memory unit that works directly with the CPU and in which the data and instructions must reside in order to be processed. Also called primary storage, RAM, or internal memory.
Definition
main memory
Term
the place where data is stored in the computer system. Primary storage is main memory. Secondary storage is nonvolatile media, such as disks and flash memory.
Definition
storage
Term
the primary part of the operating system that remains in random access memory (RAM) and is charged with performing the system
Definition
kernel
Term
the primary software on a computing system that manages its resources, controls the execution of other programs, and manages communications and data storage.
Definition
operating system
Term
the section of the operating system responsible for controlling the use of devices. It monitors every device, channel, and control unit and chooses the most efficient way to allocate all of the system
Definition
Device Manager
Term
the section of the operating system responsible for controlling the use of files.
Definition
File Manager
Term
the section of the operating system responsible for controlling the use of memory. It checks the validity of each request for memory space, and if it
Definition
Memory Manager
Term
the tangible machine and its components, including main memory, I/O devices, I/O channels, direct access storage devices, and the central processing unit.
Definition
hardware
Term
when two or more CPUs share the same main memory, most I/O devices, and the same control program routines. They service the same job stream and execute distinct processing programs concurrently.
Definition
multiprocessing
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