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    Numbers and characters using 4x4 keypad

    Hello All, 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...
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    Is there a simple 8052 programmer?

    at89c52 programmer Hello, 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...

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