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I have a project where I am using a normal 4x4 keypad. My issue here is that I need it to be able to enter numbers + alphabet characters similar to the mobile phone in SMS editing mode when you press a certain key number it scrolls through a number of character before selecting the...
I have been looking on the net for a simple AT89c52 programmer that would have the following features:
- Does not require a second 8052 to be programmed
- Does not include half a dozen ICs (Latches..)
- Is fairl simple to do on a single sided PCB.
I have looked at...