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本电路图符号译自Electronics1975年4月3日,第90页。符号图中,二级逻辑器件符号来源于IEEE标准91 1973/ANSI Y32,14,1973。其余符号均来源于IEEE No.315.1971/ANSI Y32,2,1970。这些符号已得到美国电气和电子工程师协会(IEEE),美国国家标准协会(ANSI),美国机械工程师协会、加拿大标准联合会和美国国防部的承认。符号图中,“*”标记表示建议到1976年修订IEEE No.315标准时进行修改。“O”表示国际电技术委员会(IEC)承认的符
This circuit symbol is translated from Electronics April 3, 1975, Page 90. In the legend, the second level logic symbol is derived from IEEE Standard 91 1973 / ANSI Y32,14,1973. The remaining symbols are from IEEE No. 315.1971 / ANSI Y32,2,1970. These symbols have been recognized by the Institute of Electrical and Electronics Engineers (IEEE), the American National Standards Institute (ANSI), the American Society of Mechanical Engineers, the Canadian Standards Federation and the U.S. Department of Defense. Symbol in the figure, “*” mark indicates that it is proposed to 1976 revised IEEE Standard No. 315 when the amendment. “O” indicates the character recognized by the International Electrotechnical Commission (IEC)