(1) System software is a set of one or more programme which controls the oper
ation and/or extend the processing capabilires of a computer system..
(2) the pogramms are provided by the manufacturer on specialised software..
*APPLICATION SOFTWARE.
(1) Application software is the set of one or more programms which solvs a specific problem or a speatic task this software depends on user choice ..
(2)programmes included in an application software package is calld as application software...
(3) EX- data base software pay rall software..
<TIME SHARING OPERATING SYSTEM>
IN this case a number of terminals are attached to a computer each terminal has direct access to the main computer..
* the main computer treats the programme in memory as a cirular queue a number of users can communicate with the main computer through various terminals.
*the operating system allocates fixed time slice to each programme this time slice is the order 10 to 100 ms..
*each progrrrame is excuited for a fix time eriod,.
<MULTIPROCESSING OPERATING SYSTEM>
The operating system which is capable of using and manage more than one cpu is called multiprocessing operating system each cpu in this technic alloted a definite task that means multi processing supports two or more processers runing at the same time
*In this case one cpu holds overal control of the computer and other processer the controlling cpu uses the power of other cpu as they were peripheralsdevice of the computer EX; UNIX,LINUX,WINDOWS..
<PROGRAMMING LANGUAGES>
Instruction is a command which tells the processor how to perferm a specific operation like calculating reading data painting etc..
*this instruction must be given to the computer processor with the help some languages this languages are called as programming language
*Through programming language a programmer can communitcate with the processor..
*so a language is that aceptable to a computr system is calledlanguage or programming language..
<TYPE OF PROGRAMMING LANGUAGES>
The programming languages are classified intofollowing type
(i) low level language
(ii) high level language
*LOW LEVEL LANGUAGE.
the low level languages are the languages that the computer understand or the language close to computer ..
*It is an machine orientd language that is understand by the computer..
*there are 2 type of low level language (i) machine language (ii)assembly language .
< WHAT IS SOFTWARE..
SOFTWARE<> the set of intruction of our computer is called OS software.
*A software packeage is o group of programms that solve specifice problem or perform a specific type of job.
TYPES OF SOFTWARE..
*There are basically 2 type of software
(1) system software.
(2) application software
(1) System software> system software is a set of one or more programme which controls the operation and/or extends the processing capabilities of a computer system. th system software at the programmes written are the programms as an interface between the application software and computer it self
(2) Application software> application software is the set of one or more programms which solves a specific problem or a specific task this software is depends on users choice . programms included in an application software package are called application programmers who prepare application software are called application programmers
Application software is the two type
1 Application packages
2 user application package
OPERATING SYSTEM (O.S)
Operating system is an interface between the user and the computer without an operating system computer is nothing but a box of computer it can not do work by it self.
Operting system is a programme or group of programms which controls execution of programme.
operating system ensures that all parts orperipherals of the computer systems are properly functioning it controls all the functions being perform on the hard disk and takes complete comand of instructions given to the computer..
FUNCTIONS OF OPERATING SYSTEM>>
Operating system loads required programme in the computer memory and excutes it when needed, it controls the data on storage device like hard disk and floppy disk has so manages other hardware device.
the resources such as cpu time main memory secondary memory peripherals.
the data mangement functions up an operating system allocates the input and output of data there location storage and retrieval.
the job management function of an operating systems prepares shedules controls morniters the job submitted for exicution...
operating system are following typer.
(i) single user operting system
(ii)multi user operating system
(iii)multi tasking
(iv)multi programming
(v)time sharing
(vi)multi processing.......> ,..
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