基于Quartus Ⅱ与Modelsim的加减复用电路实验教学设计

Add-subtract Multiplexing Circuit Experimental Teaching Design Based on Quartus II and Modelsim

加减计算电路是数字计算系统的核心计算单元,也是相关专业本科生需要重点掌握的专业知识。文章通过加减计算为教学案例设计一种支持原码输入、输出的加减计算电路系统,用于支持带符号nbits位宽数据的加减运算。为了优化计算电路的硬件开销,该计算电路内核采用补码技术,将加法操作与减法操作融合在一个计算电路模块中,实现系统的加减复用计算。实验教学采用“理论指导+案例仿真操作”方式,使学生成为理论指导实践的受益人。通过该教学案例,学生不仅能够掌握数字电路系统设计的一般方法,还能通过理论结合实践的模式启迪创新设计思维,提升复杂数字电路系统设计能力,为其进一步成长为学习型人才打下良好的专业基础和实践基础。

The add-subtract computing circuit is the core computing unit of digital computing systems,and it is also a key professional knowledge that relevant undergraduate students need to master.This paper designs an add-subtract calculation circuit system that supports input and output of the original code for teaching cases through addition and subtraction calculation,which is used to support addition and subtraction operations with symbol n bits bit width data.In order to optimize the hardware overhead of the computing circuit,the core of the computing circuit adopts complement technology,which integrates addition and subtraction operations into a computing circuit module to achieve the addition and subtraction multiplexing calculation of the system.The experimental teaching adopts the method of“theoretical guidance+case simulation operation”,making students the beneficiaries of theoretical guidance in practice.Through this teaching case,students can not only master the general method of digital circuit system design,but also inspire innovative design thinking through the mode of combining theory with practice,improve the design ability of complex digital circuit systems,and lay a good professional and practical foundation for their further growth as learning talents.