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[assembly language] 键盘设计 DL : 0: 1，消除按键的抖动问题因为按键在闭合或断开过程中出现一段抖动期，主要由于按键的不稳定性引起的，这时会呈现一串页脉冲，时间的长短和开关的机械特性有关。一般在5ms~10ms之间。为保证CPU对键的一次闭合作一次处理，必须去抖动。在键的稳定闭合或断开时读键的状态。 2，据EICE51原理图编写并调试一个键输入子程序，其功能为判断键盘上有无键输入，若有键入，作去抖动处理后，计算输入键的键号送累加器A。-eliminate jitter button issues as keys or disconnect the closure process for some jitter period, mainly due to the instability of the keys to the cause, then it will result in a bunch of pages pulse, the duration and switches on the mechanical properties. General ~ 10ms between 5ms. To ensure that the CPU in a pair of keys a close cooperation, must go jitter. The key to the stability closed or disconnected when reading the key state. 2, EICE51 schematics prepared and debug a key input subroutine, and its function of determining whether keys on the keyboard input, if typing for to handle jitter, the admission of Bond, Bond sent accumulator A.
Date : 2008-10-13 Size : 832byte User : 叶文
[assembly language] 键盘设计 DL : 0: 1，消除按键的抖动问题因为按键在闭合或断开过程中出现一段抖动期，主要由于按键的不稳定性引起的，这时会呈现一串页脉冲，时间的长短和开关的机械特性有关。一般在5ms~10ms之间。为保证CPU对键的一次闭合作一次处理，必须去抖动。在键的稳定闭合或断开时读键的状态。 2，据EICE51原理图编写并调试一个键输入子程序，其功能为判断键盘上有无键输入，若有键入，作去抖动处理后，计算输入键的键号送累加器A。-eliminate jitter button issues as keys or disconnect the closure process for some jitter period, mainly due to the instability of the keys to the cause, then it will result in a bunch of pages pulse, the duration and switches on the mechanical properties. General ~ 10ms between 5ms. To ensure that the CPU in a pair of keys a close cooperation, must go jitter. The key to the stability closed or disconnected when reading the key state. 2, EICE51 schematics prepared and debug a key input subroutine, and its function of determining whether keys on the keyboard input, if typing for to handle jitter, the admission of Bond, Bond sent accumulator A.
Date : 2025-12-14 Size : 1kb User : 叶文
[assembly language] bcd DL : 0: 单字节十六进制整数转换成单字节ＢＣＤ码整数入口条件：待转换的单字节十六进制整数在累加器A中。出口信息：转换后的ＢＣＤ码整数（十位和个位）仍在累加器A中，百位在R3中。影响资源：PSW、A、B、R3 堆栈需求：２字节-Single-byte hexadecimal integer into BCD code single-byte integer entrance conditions: to be the conversion of single-byte hexadecimal integer in the accumulator A in. Export Information: converted BCD code integer (10 and a bit) still accumulator A, 100 in the R3. The impact of resources: PSW, A, B, R3 Stack requirements: 2 bytes
Date : 2025-12-14 Size : 2kb User : 陈宁
[assembly language] chaizi DL : 0: 拆字5.试编写一拆字子程序，将累加器A中的高、低四位分开，分别对应放到31H单元、30H单元的低四位中，并将31H单元、30H单元的高四位全部补0。 6.试编写一拼字子程序，将外部RAM中3001H单元、3000H单元的低四位组成一个新的字节，存储到内部数据存储器32H单元中。 -拆字5.拆字try to prepare a subroutine, the accumulator A of the high and low four separate, corresponding on the 31H unit, 30H low unit 4, and will 31H unit, 30H all four units high fill 0. 6. Try to prepare a spelling subprogram, external RAM in 3001H unit, 3000H low unit formation of a new four-byte internal data memory storage unit 32H.
Date : 2025-12-14 Size : 6kb User : chutianfei
[assembly language] DAC0832 DL : 0: 利用DAC0832产生三角波，程序如下：本程序中产生的电压的最大幅度受DAC0832的基准电压限制产生的的三角波周期受累加器A的控制，可以通过改变每次加的数值来改变周期，但连续性绘变差也可以改变延时时间来实现-DAC0832 generated using the triangular wave, as follows: This procedure generated by the voltage of the most significant restrictions on the reference voltage of the DAC0832 generated by the triangular wave cycle control accumulator A can be added by changing the value every time to change the cycle, However, the continuity of paint deterioration also can change the delay time to achieve
Date : 2025-12-14 Size : 32kb User : desmond