8051 communication with RS232

I have used USB to RS232 converter to transfer my USB port on PC to RS232 port which performs communication with 8051. The problem is why my PC only can receive unexpected garbage code. My 8051 and PC...
8051 communication with RS232

I have used USB to RS232 converter to transfer my USB port on PC to RS232 port which performs communication with 8051. The problem is why my PC only can receive unexpected garbage code. My 8051 and PC...
How to communicate between RS232 VB6.0 & 8051 keil C

I want to have some leds in P2.0~2.3 and show off the "ON" lamp in VB6.0 program though RS232 during the sensors are +5V output to P1.0~1.3 89S52 MCU. But it appears many errors and doesn't work in PC...
How to communicate between RS232 VB6.0 & 8051 keil C

I want to have some leds in P2.0~2.3 and show off the "ON" lamp in VB6.0 program though RS232 during the sensors are +5V output to P1.0~1.3 89S52 MCU. But it appears many errors and doesn't work in PC...
rs232 serial communication

Hello I need to communicate gsm module. as it use asci AT commands I ask if I can connect the modems serial port directly to the microcontroller such as 89s51/8051 or I need interface?