How does the 4x4 Matrix Key Board on the microcontroller work

Hello, in school we are programming a microcontroller. We have now a homework, that we have to learn how to controll the 4x4 Matrix Keyboard on the Microcontroller. Here how it looks like: P6...
How does the 4x4 Matrix Key Board on the microcontroller work

Hello, in school we are programming a microcontroller. We have now a homework, that we have to learn how to controll the 4x4 Matrix Keyboard on the Microcontroller. Here how it looks like: P6...
printf does not work on microcontroller

I have a very simple but annoying problem. I use printf () in my code and either on Keil or Proteus simulations it works. However, when I load this code to my microcontroller, which is DS89C450, it...
printf does not work on microcontroller

I have a very simple but annoying problem. I use printf () in my code and either on Keil or Proteus simulations it works. However, when I load this code to my microcontroller, which is DS89C450, it...
Keil compiler works but when I try too use it on an iPad (for teaching) the downloaded file does not work when placed on the target microcontroller. I am using LPC 1768 and Blinky.

I am testing Blinky for use in a high school programming class where the students have late model iPads. We are able to compile the code on the Keil studio.keil.arm.com site and download but the downloaded...