There are many systems that have a matrix keypad and an LCD such as calculator, password based door lock system.
i have general question.What should we keep in mind while designing such a system.
1. When should key appear on display?
if the key is first pressed or if the key is released.
2. What should happens if the key is pressed and held down continuously?
i have general question.What should we keep in mind while designing such a system.
1. When should key appear on display?
if the key is first pressed or if the key is released.
2. What should happens if the key is pressed and held down continuously?