Serial port Communication PC and AT89C52 ( continuted )

Here was my plan to realize the communication between PC and AT89C52, Both of them are set to 2400 (baud rate), N, 8, 1. 1. I have shortened pin 2 and pin 3 of RS-232 attached to PC. When my pc was sending...
Serial port Communication PC and AT89C52 ( continuted )

Here was my plan to realize the communication between PC and AT89C52, Both of them are set to 2400 (baud rate), N, 8, 1. 1. I have shortened pin 2 and pin 3 of RS-232 attached to PC. When my pc was sending...
Serial port Communication PC and AT89C52

I am using MAX232 to communicate with AT89C52 under the control of PC using VB programming. The problems are: 1. How I can check if MAX232 is working or not, (by checking LED, I know the serial receiving...
Serial port Communication PC and AT89C52

I am using MAX232 to communicate with AT89C52 under the control of PC using VB programming. The problems are: 1. How I can check if MAX232 is working or not, (by checking LED, I know the serial receiving...
Serial Communication w/ AT89C51 or AT89C52

I want to have a simple program to print something out using hyperterminal. Also it would be nice to receive a character and echo it back. I have been able to do this in assembly but I can't get it to...