Components of Computer Sys (4) Flashcards
software consisting of programs and data that runs on computers and manages the computer hardware and provides common services for efficient execution of various application software
operating system
4 operating system services
- Input / Output Operations ,Controlling and Allocating memory,
- Work as a Resource Allocator ,Prioritizing system requests, File System Manipulation, Error Detection,
- Controlling input and output devices, Communication
- Managing file systems, protection
6 main functions of operating system
- Manages and Interacts with Computer Hardware
- Process the tasks
- Provides the User/ Computer Interface (CLI / GUI)
- Provides the Interface for Application Software
- Input / Output Operations
- Error Detection, Resource Allocation, Security and Protection
consists of CPU, Main memory, I/O Devices, etc,
hardware
This layer consists of compilers, Assemblers, linker etc.
system programs
The structure of OS consists of 4 layers:
- hardware
- software (operating system)
- system programs
- application programs
includes process management routines, memory management routines, I/O control routines, file management routines.
software (operating system)
This is dependent on users need. Ex. Railway reservation system, Bank database management etc.,
application programs
5 types of mobile OS
- Symbian
- Android
- iOS (iphone OS)
- Windows Phone
- RIM Blackberry
mobile operating system runs exclusively on ARM processors
symbian
OS that allows smartphones, tablet PCs and other mobile devices to run applications and programs.
mobile/computer operating system
4 types of operating system
- mobile/computer operating system
- embedded operating system
- network operating system (NOS)
- real-time operating system (RTOS)
bit of symbian os
32
when was symbian developed
june 1998
what is native language of symbian os
c++
a multitasking mobile os and very less dependence peripherals
symbian os
supports audio, video recording, playback and streaming and image conversion
symbian os
date when Nokia announced the acquisition of symbian ltd.
june 2008
android was developed by ___ and later the ___.
Google, Open Handset Alliance
a platform and an operating system for mobile devices based on the Linux Kernel.
android
designed primarily for touchscreen mobile devices such as smartphones and tablet computers.
android
android was built with __ language
JAVA
- uses Linux for its device drivers, memory management, process management, and networking
- It supports a wide variety of connectivity such as GSM, Wi- Fi, 3G,
android
release of android beta
november 2007
release of android 1.0
september 2008
[ANDROID]
A
alpha/angel cake
[ANDROID]
B
beta/battenberg
[ANDROID]
C
cupcake (1.5)
[ANDROID]
D
donut (1.6)
[ANDROID]
E
Eclair (2.0-2.1)
[ANDROID]
F
Froyo (2.2-2.2.3)
[ANDROID]
G
Gingerbread (2.3-2.3.7)
[ANDROID]
H
Honeycomb (3.0-3.2.6)
[ANDROID]
I
Ice cream sandwich (4.0-4.0.4)