该键盘系统使用常开型双刀按键,它在“循环扫描动态编码”原理的基础上,加进了RS触发器构成的各列键振消除(滤波)电路,不仅保持了“延迟中断型”编码方式键盘的优点,而且较“延迟型”具有更强的抗键振动干扰性能,因此更适用于性能较差的机械键。 The keyboard system uses a normally open type double-pole key. Based on the principle of “cyclic scan and dynamic coding”, the key-ring elimination (filtering) circuit of RS flip-flops is added to the keyboard system, which not only maintains the “delay interrupt type” Encoding the advantages of the keyboard, but also has more anti-key vibration interference performance than the “delayed type”, so it is more suitable for poor performance mechanical keys.