Implementation:

                                       It is the  fourth phase of SDLC in which the physical system specification  are turned over to programmer as the first part of the implementation  phase. during this phase information system is coded tested,installed and supported in the organization.During the coding programmer writer  the programs that make up_ the  system. during testing program and entire system in order to find the correct error. during installation new system becomes part of the daily activities of organization. Implementation  activities also include initialize user support such as a finalization of documentation, training program.

Design :
              The third phase of  SDLC  is  design in which analyst convert  the   description of recommended   solution is converted into logical and them physical system  specification. The analyst must design all aspect of system from input. Output  screen  report database etc. and then analyst must provide the  physical specification on of the system they have design either as a model or as a detailed document to guide those who will build a new system


                                        Logical design is the part design process  that is independent of  any specific  hardware or software platform. The  logical design concentrate on level of specification. physical design is the part of design process  in which the logical design of the system is transferred into specific detail. During the physical design the analyst team must determine many of the physical detail necessary to build a final system

Analysis:
             The second phase in the SDLC is analysis. during this phase the analyst through studies the organization current procedure and the information system  used to preform organization task.Analyst has two sub phase . The first   in requirement determination. In this sub phase  analyst work with users to determine what the user want from a proposed system. The requirement determination process usually involve a carefully study of and current system manual and computerized that might be replaced or enhanced an part pf the project.
                                 
                                                 In the second part of analysis  analyst study the requirement and structure them according to their interrelationship and eliminate any redundancies.the output of the analysis phase in a description of the  alternative  solution recommended by the analysis team onec the recommendation by the analysis team once the recommendation  is accepted by   owner the analyst can begin to make plan to acquire any hardware and system software necessary to build a proposed system.

Planning :

                           It is the first phase of system development life cycle in which someone identifies the need for new system. There need can then be analyze prioritized and translate into plan for information system department include a schedule for developing new major system.In this phase another major task is investigation of system problem and presentation of why the system should or should not be develop by the  organization. At this phase proposed in explained plan is also developed for conducing the remaining phase of SDLC.

system Development life cycle:

                                             system  development life cycle  is the traditional  methodology  used to develop maintain and replace information system. system development life cycle in the orderly set of activities conducted and plan for each development project. it contain  the several phare that marks the program of system analysis and design effort every information system development organization user slightly different life cycle model. the system development life cycle concept application to a range  of hardware and software configuration as a system can be composed of hardware only software only or a combination of both.the SDLC also referred to an the application development life cycle. the different phares  in SDLC are show in following figure.



         

fig:system development life cycle

Information  system stakeholder :

                                                        A stakeholder is any person who has an intent in a existing or proposed information system stakeholder may be  technical or non-technical  and internal and external worker. stakeholder are also called information  worker and there information  worker involves in creating, collecting, processing, distributing and using information.

                                                  there are six group of stakeholder and each group has  different role in the some information system ,

1) system owner

2)system user

3) system designer

4) system analysis and project manager

5)system builder

6) Information technology venders and consultant   

• system owner:   system owner are the information system sponsor and chief advocates they are usually responsible for funding the project of development operate and maintain the information system.
• system user: there are the people who use or one affected by  the information system on a regular basis. they are concerned with the system function related with their  job.
• system Designer:  There are  technology specialist who translate system  user business requirement and constraint into technical solution . there are interested information technology choice and design the system within the constraint of chosen technology.
• system builder: there are also technology specialist who construction information system and component based on design specification generated by the system designers        

16 bit addition in microprocessor

program:                                                           Comment
 LHLD 3000H                                              -load first 16 bit in HL reg. pair from memory specified
XCHG                                                          -Exchange content of HL to DE
LHLD    3002H                                             - load second 16 bit HL reg.-pair
MOV A, L                                                     -moved L into A register
ADD E                                                           -add two data
MOV L,A                                                      -moved A into L  register
MOV A,H                                                      -moved H into A register
ADC   D                                                         - add two data
MOV H,A                                                       - moved A into h register
SHLD 3004H                                                - store content of HL register
HLT                                                               - stop