IEEE 181, IEEE Standard on Transitions, Pulses, and Related Waveforms i. IEEE 181-2011 ii. IEEE 181-2003 iii. In 2003, the content of the IEEE Std 181 and IEEE Std 194 were merged. IEEE 181, IEEE Standard on Pulse Measurement and Analysis by Objective Techniques IEEE 181-1977 IRE Standards on Pulses: Methods of Measurement of Pulse Quantities, 1955* IEEE 194, IEEE Standard Pulse Terms and Definitions IEEE 194-1977 IRE Standards on Pulses: Definitions of Terms, Part I, 1951* IRE Standards on Pulses: Definitions of Terms, Part II, 1952* IEEE Std 1057, IEEE Standard for Digitizing Waveform Recorders i. IEEE 1057-2007 ii. IEEE 1057-1994 iii. IEEE 1057-1989, Trial-Use IEEE Std 1241 IEEE Standard for Terminology and Test Methods for Analog-to-Digital Converters i. IEEE 1241-2010 ii. IEEE 1241-2000 *Two separate organizations, the American Institute of Electrical Engineers (AIEE) and the Institute of Radio Engineers (IRE) joined in 1963 to form the IEEE.