Number | Name | Date | Kind |
---|---|---|---|
720335 | Eastman | Feb 1903 | |
2362372 | Halfmann | Nov 1944 | |
3037161 | Cummings | May 1962 | |
3617870 | Howes | Nov 1971 | |
4186339 | Finger | Jan 1980 | |
4295475 | Torzala | Oct 1981 |
Number | Date | Country |
---|---|---|
2652314 | Nov 1976 | DEX |
Entry |
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Carr, J., "Digital Interfacing with an Analog World", First ed., 1978, pp. 79-81. |
Amman, S., "Noise-Proofing a Digital Voltmeter with Off-the-Shelf Microelectronics", Electronics, Nov. 16, 1964, pp. 92-96. |