System Software

Question 1

What do operating systems do ?

Answer 1

• manage hardware and run software
• communicate with input and output devices via device drivers
• provide a platform for applications to run on and a user interface
• control memory management and allocation
• organise the CPU and its processing tasks
• deal with file and disk management
• manage system security and user accounts

Question 2

What do the I/O devices allow computers to do

Answer 2

• take inputs

- give outputs

Question 3

Device Drivers and I/O

Answer 3

• Device driver needed for every I/O device connected to computer systems
• They acts as a translator for the signals between the OS and the device
• when a computer is booted up the OS will choose the correct device drivers for the device it detects or it find and install a new one
• device manufacturers may release updates to device drivers in order to fix bugs , add features and general improvements and care

Question 4

OS also manages Applications

Answer 4

• operating systems provide a platform for applications to run on
• it also allows applications to access hardware and other peripheral devices as needed, including access to RAM
• They also provide a user interface

Question 5

OS is in the charge of Memory Management

Answer 5

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