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用单板计算机进行灯光矩阵控制的最大优点是可用程序去控制接口芯片,灵活地变换各种彩灯显示图形.但在一些场合盲目地使用单板机,不仅大材小用,还使整个灯光控制电路的费用剧增.实际上不采用单板机也可实现编程的功能,而且使控制电路成本大大下降.这里介绍一种可编程、低成本、容易制作和调试的灯光矩阵控制电路. 电路图如图1所示.整个控制电路的核心器件是IC_5、IC_6两块EPROM(2716).这里将EPROM作为一种特殊的译码器使用.我们知道,当EPROM芯片处于“读”状态时,地址线上出现某一地址,与该地址所对应的存贮单元中内容(二进制数)就会被送到8位数
Board computer with light matrix control is the biggest advantage of the program can be used to control the interface chip, flexible display of a variety of lantern display graphics.But in some cases blind use of single-board machine, not only bulky, but also the light control circuit Cost increases. In fact not using single-board machine can also be programmed to function, but also greatly reduce the cost of the control circuit. Here is a programmable, low-cost, easy to manufacture and debug lighting matrix control circuit. Shown in Figure 2. The core of the control circuit is IC_5, IC_6 two EPROM (2716). EPROM here as a special decoder to use. We know that when the EPROM chip is “read” state, the address line appears An address, the contents of the memory location corresponding to the address (binary number) will be sent to 8-digit