Advanced Calculator

[832101203王鑫瑜]

The Link Your Class	https://bbs.csdn.net/forums/ssynkqtd-04
The Link of Requirement of This Assignmen	https://bbs.csdn.net/topics/617378696
The Aim of This Assignment	Advanced Calculator
MU STU ID and FZU STU ID	21125384  832101203

 

1.PSP

Personal Software Process Stages	Estimated Time（minutes）	Actual Time（minutes）
Planning
• Estimate	50	50
Development	40	60
• Analysis	30	50
• Design Spec	20	50
• Design Review	40	40
• Coding Standard	20	50
Design	30	30
• Coding	50	50
• Code Review	10	10
• Test	5	5
Reporting
Test Repor	5	5
• Size Measurement	10	50
• Postmortem & Process Improvement Plan	40	50

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2. Presentation of the Finished Produc

Implementation of basic functions:

Addition, subtraction, multiplication, division, remainder, trigonometric functions, reading history

 

3. Code explanation

Front-end interaction

 

 Code for trigonometric functions

 

Connect the code stored on the backend

In this code, we created a simple API using Express.js. This API includes two endpoints:
GET/history: Used to obtain a list of historical records.
POST/history: Used to save new history records.

 

4.Front and rear connection diagram ：

5. summary

In this assignment, I mainly realized the difference between the front-end and back-end. The front-end is the content that users can directly browse and interact with on web pages or applications. It is mainly responsible for the design and presentation of web pages, including page layout, style design, icons, buttons, images, etc.
The backend refers to the functionality and processing logic of the backend of a web page or application. It is mainly responsible for handling user requests, data storage and processing, as well as interacting with databases and other systems. Backend development typically uses various programming languages and frameworks to implement server-side logic and functionality. At the same time, the backend also needs to consider the security and performance optimization of web pages.