The full original standard defined by the telephone company for connecting 300 baud full-duplex, 1200 baud half-duplex, asynchronous, synchronous, etc. modems to data terminals defines 25 wires. However many of these wires serve very specialized purposes or have become obsolete with improved modems.
Later the standard was modified to permit a subset of the 9 wires most frequently used by asynchronous modems: chassis ground, signal ground, transmit data, receive data, request to send, clear to send, data set ready, data terminal ready, and ring detected.
Many applications can get away with using the bare minimum of 3 wires: signal ground, transmit data, and receive data.
RS422 and RS485 and the now popular USB
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There are four main types. 1:RS232 2:EIA232 3:EIA 422 4:RS485 The major difference lies in Range and Noise immunity.Hope this could answer what you need Wajahat
Answer varies. Is it a deep or shallow box? is there a receptical, a switch in the box as well? is it just a junction box? are they single wires or NM cable?
some simple machines do need wires and some dont
rs232
rs232 isfaster than rs449
Yes, you can get a USB to RS232 converter (aka USB to Serial).
Difference between Rs232 and RS485 is Only Distance RS232 is not for long or far distance .. but RS485 can be use for LONGEST distance ..RS232 is single ended communication where as RS485 is Differential communication.Max.no of receivers in RS232 is only ONE, whereas in RS485 is 32.Max.no of transmitters in RS232 is only ONE whereas in RS485 is 32.IN RS232 there is no pin to change from transmitter mode receiver mode. But, In RS485 have DE pin to set transmitter mode and RI to set receiver mode.
One can purchase a RS232 cable at most electronic stores. A few common examples of stores that have RS232 cables for sale are Best Buy, Radio Shack, and Fry's.
RS232 means "Recommended standard no. 232", EIA standard for serial communication Thirumalesha.....
It can be either.
A UST to RS232 cable can be bought from many electrical stores especially those specialising in components and parts. They can be found local to you or online on websites such as eBay or Amazon. Buying them online is cheaper then buying them in stores.
The difference between max232 and rs232 is the voltage levels of the rs232 are high. In order to reduce those voltage means to convert those voltage levels to TTL logic levels we use max232 integrated chip which is a dual driver/ receiver.
Because R2D2 was already taken!
i think its 96000BPS
Yes on a modern computer you will need a USB to 9 pin RS232 converter or previously use the LPT parallel port.