# DESIGN AND IMPLEMENTATION OF SIMPLE SCIENTIFIC CALCULATOR

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ABSTRACT

This work was centered on the Design and implementation of a simple scientific calculator for education organization. The study traced calculator system as a tool to completely change mathematical knowledge and sophisticated problems solving strategies had advanced the field of simulated engine in mathematic.
This project work also focused principally on numbers and arithmetic operation. This researcher investigated the manual system in detail with a view to finding out the need to automate the system.
Interestingly, the end result of simple calculator system was its ability to process number and operators, and provides a useful result.
Therefore, this project will help immensely in the following way. Easy calculating of tedious mathematical problems, easy to retrieval of errors and it will also be of a good assistance to any researcher on these topics.

CHAPTER ONE
INTRODUCTION

1.1 BACKGROUND OF STUDY
Ever since, tedious mathematical problems in the organization is not a simple one, that is to say, the process can be said to involve a lot of procedures or protocols which ranges from insertion of figures for tedious calculation, processing of numbers and retrieval of errors. However, because of this, there is the need to accomplish an extensive research to discover the intricacies involved in the entire process. So the researcher decided to embark on this work design and implementation of a simple scientific calculator.
Computers have gone from being fantasies of science, fiction of realities of everyday life, especially in the offices, school (educational organization). This work is a research aimed at solving the above problem. When this system actualizes, it would be received of solving tedious calculations and sophisticated mathematical problems.
1.2. STATEMENT OF THE PROBLEM
In computation of numbers, there ties several kinds of problems in solving tedious arithmetic operation with simple calculator. Having been facing a lot of general problems, the problem identified below relate to computation of numbers:-
i low and slow speed of the calculator
ii Inappropriate representation of data
iii Loss of figure in computation of higher numbers
iv Inability of handling complex arithmetic operation
v The processing of numbers are in binary coded decimal(BCD)
To check these problems in computation of numbers solution such as
a. Introducing a standard scientific module into the entire system to perform tedious arithmetic operation.
b. Apply logic and algorithms simulation to the system
c. Introducing scientific calculator that will operate in the correct order rather than four function calculators
d. Checking overhauling of the system that are deemed incompetent
1.3 AIMS OF THE STUDY
The aim of this study is to design and implement of scientific calculator.
1.4 OBJECTIVES OF THE STUDY
This product will be tested based on the following objectives:-
i. To examine the current procedures employed in computer with regard to the calculator.
ii. To improve the speed of then simple calculator in such a way that it will reduce complexity in solving with simple calculator.
iii. To design a simple calculator that ensures timely processing
iv. To design a calculator that will change the processing number to ASCLL code.
v. And finally, to reduce the problems immensely and provides a release working environment.
1.5 SCOPE OF THE STUDY
The process covers only of two approaches used in producing the simple calculator which are logic simulation and algorithm simulation due to the fact that it is difficult to develop a scientific simple calculator that will calculate every existing calculation in all field of study, this research has been limited to arithmetic operation calculation
The study also involves the visual basic programming language for the writing and running of the source code or program. The brief description on processed data in equally included.
1.6 ASSUMPTION
The project will be designed and implemented based on the following assumption.
a) That the use visual basic programming language will make the program to run on any computer.
b) That the project will ensure timely and accurate processing in computer.
c) That the speed of the computer will improve after the implementation of the anticipated simple scientific calculator.
Finally, having done this that the facts and figures manipulated are reliable, the designed software to run primarily.
1.7 DEFINITION OF TERMS
BCD: – Binary Code Decimal
Calculator: – A small electronic device or machine for calculating numbers.
ASCII:-American Standard Code for Information Interchange computer. An electronic device that works under the control of stored program, automatically accepting, storing and processing data to produce information that is the result of the processing.
Arithmetic Shifts: – Moving bits in registers either left or right in order to multiple or divide.
Hardware:-The physical elements of the computer together with the attachment of those device used with the computer.
Machine: – A device used in performing tasking
Processing: – An execution of program in a computer machine.
Software: – Sets of related instruction to perform a specific task.

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