7 Inverters, 1 with expansion node
<UL>
<LI><b>R107A</b> is a drawing of DEC's R107A.</LI>
<LI><b>R107B</b> is a drawing of DEC's R107B.</LI>
<LI><b>R107C</b> needs a drawing.</LI>
<LI><b>R107D</b> is a drawing of DEC's R107D.</LI>
<LI><b>R107E</b> needs a drawing.</LI>
<LI><b>R107S1A</b> is a drawing of DEC's R107S1A.</LI>
<LI><b>R107X</b> is a 'modernized' R107.</LI>