直接可编程树型结构函数

DIRECT PROGRAMMABLE TREE STRUCTURE FUNCTION

本文提出一种新型的直接可编程树型结构函数．实现这种函数的电路，具有的特点是：１）它有独特的数学模型；２）该数学函数呈现嵌套子表达式的树型结构，对输入变量或控制变量可直接编程，电路输出由此编程确定；３）电路内部不需设置熔丝．实验结果表明，在许多方面，由于该电路具有十分强大的功能，它完全可以替代ＰＬＤ，ＰＬＡ，ＰＡＬ，ＧＡＬ等可编程逻辑器件，且使用十分灵活，设计、制作成本更加低廉．

A new function of direct programmable tree type structure is presented.The circuit performing the function has many advantages: 1) It owns special mathe matical model. 2) The function has a tree type structure of nested expression, it is programmable to input or control variables. The circuit output is confirmed by pro gramming. 3) The circuit does not need the fuse. The experimental results show that the circuit could completely replace conventional PLD,PAL,PLA,GAL,etc.The device is cheep and convenient for users.