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《单片机与嵌入式系统应用》杂志社: 贵刊2001年第11期所刊的《一种用N+1个I/O口实现的N×N矩阵式键盘》一文(以下简称《键盘》),构思新颖、设计巧妙,可有效地利用有限的I/O口,在某些应用中对优化设计具有借鉴意义。但是作者给出的电路图,不具有普遍意义。对于应用较广的51、96、196系列8位、16位单片机,该电路软、硬件需要作相应变更才能有效使用。
“SCM and Embedded Systems Applications” magazine: your issue No. 11, 2001 issue of “an N + 1 I / O port to achieve the N × N matrix keyboard” article (hereinafter referred to as “keyboard”) , Innovative ideas, clever design, which can effectively use a limited number of I / O port, in some applications for reference to optimize the design. However, the circuit diagram given by the author does not have universal significance. For a wider range of 51,96,196 series of 8-bit, 16-bit microcontroller, the circuit software and hardware needs to be changed accordingly to effectively use.