Operating Systems by Lionel Basa

Operating Systems by Lionel Basa https://padlet.com/lionelbasa1/kzm5v73537td Made with a creative frenzy by Year 11 en-us 2019-11-05 16:20:33 UTC 2022-10-27 13:20:31 UTC hello@padlet.com Renard: Functions of an OS? lionelbasa1 https://padlet.com/lionelbasa1/kzm5v73537td/wish/406951673 1. Security
2. Control over system performance
3.Job accounting
4.Error detecting aids
5.Coordination between other software and users
6.Memory Management
7.Processor Management
8.Device Management
9.File Management
Reni vagyok

]]> 2019-11-05 16:29:36 UTC https://padlet.com/lionelbasa1/kzm5v73537td/wish/406951673 Daniel, Riccardo: What is a UI? Types of UI. lionelbasa1 https://padlet.com/lionelbasa1/kzm5v73537td/wish/406951867 User Interface
Allows us to communicate with the computer.
Types:
GUI (Graphical)
WIMP (Windows, Icons, Menus and Pointers)
CLI (Command Line)
MDI (Menu-Driven)
VAI (Voice Activated)
RTI (Real-Time)]]> 2019-11-05 16:29:49 UTC https://padlet.com/lionelbasa1/kzm5v73537td/wish/406951867 Zsofi, Alex: What are interrupts? lionelbasa1 https://padlet.com/lionelbasa1/kzm5v73537td/wish/406952174 •Interrupts are signals sent to the CPU by external devices to indicate an event that needs immediate attention - asks the CPU to stop what it's doing and
Hardware Interrupts: generate by hardware devices - printer is out of paper,
Software Interrupts:
generated by software systems/programs - dividing 0/0 would display an error.

]]> 2019-11-05 16:30:14 UTC https://padlet.com/lionelbasa1/kzm5v73537td/wish/406952174 Oliver: What are embedded systems? lionelbasa1 https://padlet.com/lionelbasa1/kzm5v73537td/wish/406952301 •An embedded system is a dedicated computer system designed to perform a few specific functions
•The system is built into the hardware
•They range from microwave ovens, digital watches and calculators to robots and jumbo jets

]]> 2019-11-05 16:30:25 UTC https://padlet.com/lionelbasa1/kzm5v73537td/wish/406952301 Chanel, Andriy: Sending data to the printer lionelbasa1 https://padlet.com/lionelbasa1/kzm5v73537td/wish/406952885 The computer can send data thousands of times faster then the printer can print.

The computer sends the printer output to a print buffer, a special area of memory in either the computer or the printer, at full speed.]]> 2019-11-05 16:31:09 UTC https://padlet.com/lionelbasa1/kzm5v73537td/wish/406952885 Alan, Kevin: Device management: peripherals, storage lionelbasa1 https://padlet.com/lionelbasa1/kzm5v73537td/wish/406953663 •Peripherals are all the devices outside of the CPU

•Includes input and output devices, secondary storage

•The access speed of these is relatively slow

Main memory
transfers programs into and out of memory, allocates free space between programs, and keeps track of memory usage

]]> 2019-11-05 16:32:09 UTC https://padlet.com/lionelbasa1/kzm5v73537td/wish/406953663 Misha: Single tasking, multi tasking OS / single user, multi user OS lionelbasa1 https://padlet.com/lionelbasa1/kzm5v73537td/wish/409485810 2019-11-11 14:52:04 UTC https://padlet.com/lionelbasa1/kzm5v73537td/wish/409485810 Multi tasking and Single tasking OS https://padlet.com/lionelbasa1/kzm5v73537td/wish/409878885 Multi Tasking.
An OS that can run multiple tasks at the same time, eg. running music videos and games simultaneously.
Single Tasking
Can only run programmes one at a time.]]> 2019-11-12 11:25:03 UTC https://padlet.com/lionelbasa1/kzm5v73537td/wish/409878885 https://padlet.com/lionelbasa1/kzm5v73537td/wish/409879297 2019-11-12 11:26:26 UTC https://padlet.com/lionelbasa1/kzm5v73537td/wish/409879297 Multi user and Single user OS https://padlet.com/lionelbasa1/kzm5v73537td/wish/409881333 Multi user
Has multiple usernames and passwords, with separate data and permissions, that can be open simultaneously.
Single user.
One username permitted.]]> 2019-11-12 11:32:40 UTC https://padlet.com/lionelbasa1/kzm5v73537td/wish/409881333