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In designing auto-control devices including computer, apart from the combinational logic design, the now fairly popular method which attracts daily increasing attention is the microprogramming. Control storage is the key element of microprogrammable controller. This paper elaborates on the function and position played by the said control storage in microp- rogram-control digital system, and evaluates its development, basic prin- ciples and characteristics by means of citing several types of control storages.... In designing auto-control devices including computer, apart from the combinational logic design, the now fairly popular method which attracts daily increasing attention is the microprogramming. Control storage is the key element of microprogrammable controller. This paper elaborates on the function and position played by the said control storage in microp- rogram-control digital system, and evaluates its development, basic prin- ciples and characteristics by means of citing several types of control storages. The paper devotes quite a large space to expounding the adoption of SSI direct-control microprogramming and the PLA micro-controler's logic structure as well as its effect for data storage. The influence exer- ted by different control storages on microcontroller's structure and the optional programs for control storage investigated by this paper are of reference value for practical designing. 设计包括计算机在内的自动控制装置,除采用组合逻辑设计方法外,目前比较流行、且愈来愈为人们重视的方法,是微程序设计方法。该方法的控制存贮器是微程序控制器的关键设备。本文阐述它在微程序控制数字系统中的作用与地位;通过列举若干类型的控存,对其发展、原理与特点作了评价;并以较大篇幅论述了采用小规模组件的直控法微程序设计和采用PLA的微控器逻辑结构及其存贮信息的效率。文中所述的不同控存对微控器结构的影响,以及对控存方案的选择意见,可供设计时参考。 This paper introduces the conept of reduced-dimension map and its applications on MSI combinational logic design. This approach is not only intuitive and convenient to use, but also offers quick derivation of optimum circuit connection. 本文介绍了降维图的概念,讨论了降维图在MSI组合逻辑设计中的应用。事实说明这种方法不仅直观、简便,而且能很快得到最佳接线方案。 This paper presents a decomposition method realized by solving boolean eguation for somplifying combinational logic design. In this method, it realizes a combinational logic design F(x 1,x 2, ,x n)=1 , which is transferred into a combinational logic design F(x 1,x 2, ,x n)=0. Then it eguivalently transfers F(x 1,x 2, ,x n)=0 into the boolean equations. By logic EXCLUSIVE OR, it realizes the eguations. Thus,it is achieved that the combinational logic design is extremely... This paper presents a decomposition method realized by solving boolean eguation for somplifying combinational logic design. In this method, it realizes a combinational logic design F(x 1,x 2, ,x n)=1 , which is transferred into a combinational logic design F(x 1,x 2, ,x n)=0. Then it eguivalently transfers F(x 1,x 2, ,x n)=0 into the boolean equations. By logic EXCLUSIVE OR, it realizes the eguations. Thus,it is achieved that the combinational logic design is extremely simplified design.Finally, it gives the flowchart for solving boolean eguations. 本文提出的简化组合逻辑设计的布尔方程分解方法,是将F(x1,x2,…,xn)=1的组合逻辑设计转化为F(x1,x2,…,xn)=0的组合逻辑设计问题,然后将F(x1,x2,…,xn)=0转化为与其等价的布尔方程组,对得到的布尔方程组用“异或”逻辑实现,从而获得极为简化的组合逻辑设计。最后我们给出了解布尔方程的程序设计框图
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