For using microcontroller programming language to write simple computer programs and simulation circuit diagram, the details are as follows:

Key matrix is used to carry out simulation, 16 buttons respectively represent Numbers 0 to 9, subtracting key a key, a is equal to the key, a clear key, key distribution is as follows:

7 8 9 add
4 5 6 minus
1 2 3 by
Remove zero equals except the

2. Using digital tube or 1602 for display (unified simulation is used to realize, there should be prompt when operation for addition, subtraction, multiplication, and division),
3. The functional requirements: operation can perform simple addition, subtraction, multiplication, and division (operation can realize continuous addition, subtraction, multiplication, and division, such as: 2 + 3 + 4=9),
Press reset key to save the result, according to the long equal to bring up the saved as a result,
Hope to get the guidance of the great god,

CodePudding user response:

https://blog.csdn.net/xianfajushi/article/details/80885105

CodePudding user response:

Learn how to use Ardunio UNO, 4 x4 keyboard and LCD display make your calculator!
https://www.yiboard.com/thread-1121-1-1.html

Using a 2.4 -inch Arduino TFT LCD screen to build the Arduino touch screen calculator:
Use TFT LCD production Arduino touch screen calculator

CodePudding user response:

This program online search a handful

CodePudding user response:

Can you simplify the simulation circuit diagram?