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→Components: Added note to U15
'''U14''' - [http://web.archive.org/web/20200214042837/http://www.ti.com/lit/ds/symlink/cd74hc4051.pdf CD74HC4051PWR] - High-Speed CMOS Logic Analog Mux/Demux - 8:1
'''U15''' - [https://www.ti.com/lit/ds/symlink/lmc555.pdf TI LMC555CMM Family] per the <ref group="IC Footnotes" name="U15"> IC marked with ZC5 . TI Part marking noted in datasheetlookup provides LMV761. Pinout , footprint, and footprint measured IC/pin operation matcheswhat is expected from a 555.</ref>
'''U16''' - [http://web.archive.org/web/20190417163532/https://www.ti.com/lit/ds/symlink/lmv761.pdf LMV761MF] - Low Voltage Precision Comparator w/ Push-Pull Output <ref group="IC Footnotes" name="U16"> Package marking shows C22A. TI Part marking lookup provides LMV761. The SOT-23 footprint appears to match what is on the PCB.</ref>
