Serial peripheral interface (SPI) and I2C

Serial Peripheral Interface is a clocked synchronous interface, used for short distance communications, generally between embedded devices. I2C is a multi-controller (master), multi-peripheral (slave), packet switched, single-ended, serial computer bus. I2C is typically used for attaching lower-speed peripheral ICs to processors and microcontrollers in short-distance, intra-board communications. I2C and SPI are protocols supported by the operating system. See CRBasic Editor The CRBasic programming editor; stand-alone software and also included with LoggerNet, PC400, and RTDAQ software. help for instructions that support these protocols.

For additional information on I2C, see www.i2c-bus.org .