RS stands for "Recommended Standard". RS 232 is the recommended standard for serial communication between digital devices. There are many definitions and explanations on the web if you do a Google search for "RS 232". One of them can be found at : https://www.omega.com/TechRef/pdf/RS-232.pdf
Thanks for the reply, could you please let me know that what is the basic defination, when we communicate a cpu with a microcontroller or a mobile. In this case what this definication says and what standard it shows
Thanks for the reply, could you please let me know that what is the basic defination, when we communicate a cpu with a microcontroller or a mobile. In this case what this definication says and what standard it shows
RS-232 is basically a voltage level of transmitting digital data...In RS-232 High means (-12V) and Low means (+12V), so it has an output span of +/-12V
RS-232 is basically a voltage level of transmitting digital data...In RS-232 High means (-12V) and Low means (+12V), so it has an output span of +/-12V
That's not correct. There are, in fact, RS 232 tranceivers that operate on 5VDC power supplies. The voltage specification in the IEA RS 232 standard is very loose.
RS-232 Specifications
TRANSMITTED SIGNAL
VOLTAGE LEVELS:
Binary 0: +5 to +15 Vdc
(called a “space” or “on”)
Binary 1: -5 to -15 Vdc
(called a “mark” or “off”)
RECEIVED SIGNAL
VOLTAGE LEVELS:
Binary 0: +3 to +13 Vdc
Binary 1: -3 to -13 Vdc
DATA FORMAT:
Start bit: Binary 0
Data: 5, 6, 7 or 8 bits
Parity: Odd, even, mark or space
(not used with 8-bit data)
Stop bit: Binary 1, one or two bits