hi every one, i m new in keil compiler. i connect LCD16x2 and keypad (4x4). my problem is that , in LCD, it can show from 0-15 on pressing from first till last key, while i want to print what is exactly written in keypad. like 1-9, 0, A to D.? my second problem is that i can see the number only while pressing, i want that pressed no. to show untill i press new no.? and third problem is that,i want to save the pressed digits from key pad , to send them wirelessly too, but thats a later task, first i need to save the digits in any variables. many thinks and regards to all, plz waiting for the reply my code is in c:\projects\hamash\keilcpp\55
No!
Let's have a variable with a proper, meaningful name - like "previousKeyCode"
var1 = INKEY();
Again, why not have a variable with a proper, meaningful name - like "newKeyCode"
Then the test becomes directly obvious - instead of having to look around for the meanings of var1 and OldVar1:
if( newKeyCode != previousKeyCode )