Operating Systems Functions

Operating System Functions

What is the main role of the operating system?

Software which provides an interface between the user and the hardware to allow them to communicate.

Multiple Choice

The following is not a type of Systems Software

• Device Drivers

• Utility Programs

• Applications

• Operating Systems

Multiple Choice

What type of Software is needed to control the computer’s hardware?

• Programming Software

• Systems Software

• Application Software

• Bespoke Software

What is a user interface?

What you see when you turn on the device

• GUI – Graphical User Interface, uses windows,

icons, menus and pointers. User friendly.

• CLI – Command Line Interface – the user types

in commands. Has more control over the
system.

• Natural language Interface – speech recognition

using microphone and speaker e.g. Siri, Alexa

• Menu driven – a set menu of options are given

e.g. ATM

Multiple Choice

To allow a user to interact with an Operating System – it must have a .........?

• User Connection

• User Interface

• Virtual Connection

• Remote Accesss

Multiple Choice

Which type of User Interface contains Windows, Icons, Menus, and Pointers?

• Command Line Interface

• Graphical User Interface

• Menu Interface

• No User Interface

Multiple Choice

Which type of User Interface is text-based and requires the user to write commands?

• Command Line Interface

• Graphical User Interface

• Menu Interface

• No User Interface

What is the function of an OS?

What will outstanding progress look like in today’s lesson?

ACHIEVE @ Sedgefield

Memory
Management

Multitasking

Peripheral

Device driver

Recall the functions of
a Operating System

Describe the purpose

of an Operating

System

•Windows (7, 8,
10)

•IOS

•Mac

•Android

•Linux / Unix

•Raspbian

• The OS allocates memory between the

different programs that are open at the
same time

• Programmers and users do not need to

know where in memory data is being held –
it is the purpose of the Operating System to
do this

Memory management

We gather all of the information that we need in order to learn.

Multiple Choice

Diving processor time between processes so that they appear to multitask is known as:

• Time Slicing

• Fish Slicing

• Time waiting

• Idle Time

• The activity that has just been completed

is similar to how the processor has to
divide its time between processes.
– It may allocate a small “time slice” to each

separate process so that it appears that many
processes are taking place at the same time
(multitasking)

Processor management

We gather all of the information that we need in order to learn.

If the tasks were split like this, we would have
to wait until all Task A is complete, before
completing Task B. This means that we will not
have issues when sharing resources, but could
make some tasks appear to take a very long
time to execute.

Time

Task A

Task B

Task C

Task D

Multitasking

We gather all of the information that we need in order to learn.

• By giving the processor a small time slice for

each task means that all tasks appear to be
executing at the same time.

• To the user it appears that we can multitask

and have lots of programs open at once.

• In reality resources such as memory and the

processor are being shared amongst tasks.

Time

A

B

C

D

A

B

C

D

A

B

Multitasking

We gather all of the information that we need in order to learn.

Multiple Choice

Operating Systems will allocate sections of RAM to the processes as part of:

• Processor Management

• File Management

• Peripheral Management

• Memory Management

Multiple Choice

Dividing tasks so that the Operating System appears to multitask is dealt with under:

• Memory Management

• File Management

• Processor Management

• Peripheral Management

• A piece of software used to control a piece of

hardware.

• Drivers allow a peripheral device to be

connected to a computer and it be used by an
Operating System.

‒

You may get drivers for graphics cards, mouse, sound
card, network interface cards.

‒

Drivers are OS specific and are regularly updated by
companies

Drivers

We gather all of the information that we need in order to learn.

• Operating Systems manage the way in which

hardware interacts with software

• A peripheral is a piece of hardware that is not

directly connected to the CPU – such as a
keyboard, a mouse or even a hard disk drive.

• An Operating System managed all of the peripheral

devices that are connected to the computer – this
allows them to be disabled, or drivers be updated.

‒ In windows you can access Windows Device Management

Peripheral management

We gather all of the information that we need in order to learn.

Multiple Choice

This piece of software is used to control hardware devices and allow an Operating System to make use of the hardware

• Device Management

• Device Driver

• Device System

• Hardware Peripheral Device

Multiple Choice

Which Operating System function ensures any device can be used with the operating system, as long as a driver is available for it?

• Memory Management

• Peripheral Management

• User Management

• File Management

Multiple Choice

Which Operating System function enables the allocation of folders?

• User Interface

• Memory Management

• User Management

• File Management

Multiple Choice

Which Operating System function enables access levels to be given?

• User Interface

• Peripheral Management

• User Management

• File Management

Multiple Choice

Which Operating System function allows more than one program can run at the same time?

• User Interface

• Memory Management

• User Management

• File Management

Multiple Choice

Which type of user interface is difficult to use and requires little processing power?

• Graphical User Interface

• Command Line Interface

Multiple Choice

If an OS has the ability to run more than one program simultaneously what is this called?

• Mutlihandling

• Multitasking

• Multiuser

• Multiprogram

Open Ended

ESCAPE TICKET

Explain two functions of the operating system (4)

Poll

Rate your confidence with operating systems. Use the POD link for more information.

https://members.gcsepod.com/shared/podcasts/chapter/83814

• I haven't got a clue...

• I get it but need more revision

• Feel confident

• Easy peasy

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Draw an image to represent operating systems