Serial Peripheral Interface (SPI) Introduction. Serial Peripheral Interface (SPI) is an interface bus commonly used to send data between microcontrollers and small peripherals such as shift registers, sensors, and SD cards. It uses separate clock and data lines, along with a select line to choose the device you wish to talk to.
Establishment of the Committee. In February 1947, in accordance with a decision from the first session of the Commission on Human Rights (E/259), a group consisting of Eleanor Roosevelt, Pen-Chun Chang and Charles Malik, began drafting the International Bill of Human Rights.
The newly established United Nations set up a Human Rights Commission, chaired by Roosevelt's widow, Eleanor. After 18 months' deliberation it drafted a Universal Declaration of Human Rights (UDHR), adopted by the UN on 10 December 1948.