[Digital IC]C语言实现硬件加法器

// ConsoleApplication1.cpp : 此文件包含 "main" 函数。程序执行将在此处开始并结束。
//

#include "pch.h"
#include <iostream>
#include <stdlib.h>

typedef unsigned char uchar;

typedef struct
{
	unsigned char sum;
	unsigned char carry;
}ADD_Result;

uchar AND(uchar a, uchar b);						//2-1 与门
uchar OR(uchar a, uchar b);							//2-1 或门
uchar NOT(uchar a);									//1-1 非门		
uchar XOR(uchar a, uchar b);						//2-1 异或门

ADD_Result* ADD_Cell_1(uchar a, uchar b, uchar c);
ADD_Result* ADD_Cell_8(uchar a, uchar b, uchar c);

int main()
{
	uchar a, b, c;
	ADD_Result* add_1_bit;
	ADD_Result* add_8_bit;
	
	//测试单个加法器
	for (a = 0; a <= 1; a++)
	{
		for (b = 0; b <= 1; b++)
		{
			for (c = 0; c <= 1; c++)
			{
				add_1_bit = ADD_Cell_1(a, b, c);
				printf("%d,%d,%d:s:%d c:%d\n", a, b, c, add_1_bit->sum, add_1_bit->carry);
				free(add_1_bit);
			}
		}
	}
	printf("\n\n");

	
	//测试8位加法器
	//测试单个加法器
	for (a = 55; a <= 80; a++)
	{
		for (b = 160; b <= 190; b++)
		{	
			add_8_bit = ADD_Cell_8(a, b, 0);
			printf("%d,%d,%d:s:%d c:%d\n", a, b, 0, add_8_bit->sum, add_8_bit->carry);
			free(add_8_bit);
		}
	}
	 
	 
}

ADD_Result* ADD_Cell_8(uchar a, uchar b, uchar c)
{
	int bit_location;//0 最低位

	ADD_Result* result = (ADD_Result*)malloc(sizeof(ADD_Result));
	result->sum = 0;
	result->carry = 0;

	uchar c_bit = c & 0x1;

	for (bit_location = 0; bit_location < 8; bit_location++)
	{
		uchar a_bit = (a >> bit_location) & 0x1;
		uchar b_bit = (b >> bit_location) & 0x1;
		
		//计算一位加法
		ADD_Result* result_1_bit;
		result_1_bit = ADD_Cell_1(a_bit, b_bit, c_bit);
		
		//累加到8位加法中
		result->sum	|= result_1_bit->sum << bit_location;
		c_bit		 = result_1_bit->carry;

		//释放一位加法结果
		free(result_1_bit);
		
	}
	result->carry = c_bit;

	return result;
}

//一位加法器
ADD_Result* ADD_Cell_1(uchar a, uchar b, uchar c)
{
	ADD_Result* result = (ADD_Result*)malloc(sizeof(ADD_Result));

	//输出
	result->sum		= XOR(XOR(a,b),c);
	result->carry	= OR(AND(b,c),AND(a,XOR(b,c)));

	return result;
}

//与门
uchar AND(uchar a, uchar b)
{
	a = a & 0x1;
	b = b & 0x1;

	return (a & b);
}

//或门
uchar OR(uchar a, uchar b)
{
	a = a & 0x1;
	b = b & 0x1;

	return (a | b);
}

//非门
uchar NOT(uchar a)
{	
	a = ~a & 0x1;

	return a;
}

//异或门
uchar XOR(uchar a, uchar b)
{	
	a = a & 0x1;
	b = b & 0x1;

	uchar c = OR(AND(NOT(a),b),AND(NOT(b),a));

	return c;
}


// 运行程序: Ctrl + F5 或调试 >“开始执行(不调试)”菜单
// 调试程序: F5 或调试 >“开始调试”菜单

// 入门提示: 
//   1. 使用解决方案资源管理器窗口添加/管理文件
//   2. 使用团队资源管理器窗口连接到源代码管理
//   3. 使用输出窗口查看生成输出和其他消息
//   4. 使用错误列表窗口查看错误
//   5. 转到“项目”>“添加新项”以创建新的代码文件，或转到“项目”>“添加现有项”以将现有代码文件添加到项目
//   6. 将来，若要再次打开此项目，请转到“文件”>“打开”>“项目”并选择 .sln 文件
[Digital IC]C语言实现硬件加法器

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