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To U2-10 Clock Rate - variable resist +6k between U2-8 and U2-9 Reset Sw - when pressed, short +12V and Reset In Pause CV In - ~27K to U3-8? No, transistors maybe activate? - Clock in socket with 80 contacts AT ISA 16 bits Bus Edge Connector BUS ISA AT Edge connector PCI bus Edge Connector BUS ISA AT Edge connector PCI bus Edge Connector BUS ISA AT Edge connector PCI bus Edge Connector BUS ISA AT Edge connector PCI bus Edge Connector x1 http://www.ritrontek.com/uploadfile/2016/1026/20161026105231124.pdf#page=70 Highspeed card edge card connector socket for 2.36mm PCBs, vertical, alignment pins (source: https://suddendocs.samtec.com/prints/hsec8-1xxx-xx-xx-dv-x-xx-footprint.pdf Samtec Micro Mate Discrete Wire Terminal Strip, 1.00 mm Pitch, Single Row, Horizontal (Right Angle) (source: https://suddendocs.samtec.com/prints/t1m-single-row-footprint.pdf Samtec Micro Mate Discrete Wire Terminal Strip, 1.00 mm Pitch, Single Row, Horizontal, Latch (source: https://suddendocs.samtec.com/prints/t1m-single-row-footprint.pdf TE Connectivity, HDI, Wire-to-Board, Fully Shrouded, Vertical Header: https://www.te.com/usa-en/product-440054-2.datasheet.pdf connector header hdr horizontal right-angle shrouded fully-shrounded 440054-2 2-440054-2 4-440054-2 6-440054-2 2-440054-6 4-440054-6 6-440054-6 TE Connectivity, HDI, Wire-to-Board, Fully Shrouded, Vertical Header: https://www.te.com/usa-en/product-440054-2.datasheet.pdf connector header hdr horizontal right-angle shrouded fully-shrounded 440054-2 2-440054-2 4-440054-2 6-440054-2 2-440054-6 4-440054-6 6-440054-6 TE Connectivity, HDI, Wire-to-Board, Fully Shrouded, Header: https://www.te.com/usa-en/product-440055-2.datasheet.pdf connector header hdr horizontal vertical shrouded fully-shrounded 440054-2 2-440054-2 4-440054-2 6-440054-2 2-440054-6 4-440054-6 6-440054-6 TE Connectivity, HDI, Wire-to-Board, Fully Shrouded, Header: https://www.te.com/usa-en/product-440055-2.datasheet.pdf connector header hdr horizontal vertical shrouded fully-shrounded 440055-2 2-440055-2 4-440055-2 6-440055-2 8-440055-2 TE Connectivity Buchanan WireMate connector, Poke-In series, 4-way, 4.0mm pitch, AWG18-22 (0.3255-0.823mm2), https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F2834006%7FB6%7Fpdf%7FEnglish%7FENG_CD_2834006_B6.pdf%7F2834006-1 TE Connectivity Buchanan WireMate connector, Poke-In series, 3-way, 4.0mm pitch, AWG18-22 (0.3255-0.823mm2), https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F2834006%7FB6%7Fpdf%7FEnglish%7FENG_CD_2834006_B6.pdf%7F2834006-1 TE Connectivity Buchanan WireMate connector, Poke-In series, 2-way, 4.0mm pitch, AWG18-22 (0.3255-0.823mm2), https://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F2834006%7FB6%7Fpdf%7FEnglish%7FENG_CD_2834006_B6.pdf%7F2834006-1 TE-Connectivity Micro-MaTch female-on-board top-entry thru-hole 16 pin with exposed pad (http://www.onsemi.com/pub/Collateral/NCP4308-D.PDF WDFN, 12 Pin (https://www.renesas.com/us/en/document/psc/package-drawing-tdfn-12pin-l123x3c), generated with kicad-footprint-generator Molex Mini-Fit Jr. Power Connectors, 42819-32XX, With thermal vias and counter-pad, see http://www.ti.com/lit/ds/symlink/tps62177.pdf WSON-10 package 2x3mm body, pitch 0.5mm (http://www.analog.com/media/en/package-pcb-resources/package/56702234806764cp_24_3.pdf, http://www.analog.com/media/en/technical-documentation/data-sheets/ADL5801.pdf LFCSP VQ, 48 pin, exposed pad, 7x7mm body (http://www.analog.com/media/en/technical-documentation/data-sheets/AD7951.pdf, http://www.analog.com/en/design-center/packaging-quality-symbols-footprints/symbols-and-footprints/AD7951.html LFCSP-WD, 8 Pin (https://www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP2303A/document_id/494#page=14), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-122-02-xxx-DV, 22 Pins (http://www.molex.com/pdm_docs/sd/555600207_sd.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py TQFN, 28 Pin (http://www.ti.com/lit/ds/symlink/lm5175.pdf#page=40), generated with kicad-footprint-generator connector Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 502426-2210, 22 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py Quectel BG96 Cellular GSM 2G.

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