2006-09-11 06:14:03 · 2 answers · asked by girish kc 1 in Consumer Electronics ➔ Other - Electronics
It is the most common kind. The two wires carry a signal that is on or off to convey digital information. No other wires are essential for the communications (like handshaking to open/close the message). This approach is the cheapest since it uses the least expenisive wiring and can fit the most interface circuits into a multi-wire cable.
2006-09-11 06:19:00 · answer #1 · answered by Rich Z 7 · 0⤊ 0⤋
I2C is an acronym for Inter Integrated Circuit bus. I2C is a 2-wire serial interface standard defined by Philips Semiconductor in the early 1980's. It's purpose was to provide an easy way to connect a CPU to peripheral chips in a TV-set. The BUS physically consists of 2 active wires and a ground connection. The active wires, SDA and SCL, are both bidirectional. Where SDA is the Serial DAta line and SCL is the Serial CLock line.
The key advantage of this interface is that only two lines (clock and data) are required for full duplexed communication between multiple devices. The interface typically runs at a fairly low speed (100kHz to 400kHz). With I2C, each IC on the bus has a unique address. Chips can act as a receiver and/or transmitter depending on it's functionality.
2006-09-11 13:22:03 · answer #2 · answered by Anonymous · 1⤊ 0⤋