Problem with basic system keypad interface 4x3

Hi All, I am trying to interface a simple 4x3 keypad i have never used 2051, i am using port 3. The pins i am using are p3.0,p3.1,p3.2,p3.3,p3.4,p3.5,p3.7 this is the basic code i am using ...
Problem with basic system keypad interface 4x3

Hi All, I am trying to interface a simple 4x3 keypad i have never used 89C2051, i am using port 3. The pins i am using are p3.0,p3.1,p3.2,p3.3,p3.4,p3.5,p3.7 this is the basic code i am using...
Problem with basic system keypad interface 4x3

Hi All, I am trying to interface a simple 4x3 keypad i have never used 2051, i am using port 3. The pins i am using are p3.0,p3.1,p3.2,p3.3,p3.4,p3.5,p3.7 this is the basic code i am using ...
Problem with basic system keypad interface 4x3

Hi All, I am trying to interface a simple 4x3 keypad i have never used 89C2051, i am using port 3. The pins i am using are p3.0,p3.1,p3.2,p3.3,p3.4,p3.5,p3.7 this is the basic code i am using...
Strugling to interface 4x8 keypad with LPC2148

Hi Friends, I am new to ARM. I have a project where i am trying to interface the keypad with controller. After a try of two days i thought i will try to take help from you guys....if somebody can refer...